Why Trust Best Mattress Brand Caret Down Our proficient team of sleep science coaches, engineers, and product evaluators rigorously inspect hundreds of mattresses using our unique product methodology. Each article is scrutinized for precision, citing only credible sources. Systematically reviewing our content and recommendations, we align with the latest scientific literature and expert insights. Our top-rated mattresses have been personally evaluated and highly rated. Key TakeawaysExceptional Cooling and Comfort: The AS3 Hybrid excels in temperature regulation, earning a perfect 10/10 for cooling. Its Refresh Cover, breathable Bio-Pur® foam, and pocketed coil system work together to create a cool and comfortable sleep environment, making it an excellent choice for hot sleepers and couples.Versatile Support for Most Sleepers: With its medium firmness and balanced hybrid construction, the AS3 Hybrid accommodates a wide range of sleep positions and body types. It offers excellent pressure relief and spinal alignment for side and back sleepers, while also providing adequate support for combination sleepers.Eco-Friendly Design with Minimal Drawbacks: The mattress features plant-based materials and is manufactured using a zero-emissions process, appealing to environmentally conscious consumers. While it may not be perfect for everyone, its design make it a solid investment for most sleepers seeking a high-quality, eco-friendly mattress.Ever wondered what it’s like to sleep on a cloud made by science? Not too soft, not too firm, but just right.From the moment I unboxed the AS3 Hybrid, I knew I was in for an intriguing journey. The mattress unfurled with minimal off-gassing, a refreshing start that hinted at Amerisleep’s commitment to quality materials.As I ran my hand over the cool-to-the-touch Refresh Cover, I couldn’t help but wonder: would this mattress live up to its hype, or would it be just another over-marketed sleep solution?Spoiler alert: I’m slapping a hefty 9 out of 10 on this bed. But don’t rush off to buy one just yet—we’ve got some serious mattress talk to get through first.In this no-snooze review, we’re going to unpack everything about the AS3 Hybrid. We’ll explore its layers like a sleep archaeologist, test its bounce like a kangaroo on a trampoline, and see if it really keeps you cool or if you’ll wake up feeling like a human hot pocket. Best Mattress: Amerisleep AS3 Hybrid Price: $1199 to $2548Mattress Type: HybridMattress Height: 12 inchesFirmness: Medium (5 to 6 on the firmness scale)Best for most sleepers interested in a bouncy mattressAvailable in twin, twin XL, full (double), queen, king, California king, and split king Warranty 20 Years Sleep Trial 100 Nights Shipping FreeMattress HighlightsCooling, buoyant plant-based foamIndividually wrapped coil supportInstantly cooling cover fabricRecommended ForSide, back, and combo sleepersHot sleepersCouplesSave $500 on the Amerisleep AS3 Hybrid with our discount code. Claim Deal 9.3 Overall Score 9 Value 10 Edge Support 9 Trial Period 9 Response Time 9 Motion Transfer 10 Cooling & BreathabilityInside the Amerisleep AS3 Hybrid: Materials and ConstructionUpon opening the box, I found the AS3 Hybrid. As I began to unroll the mattress, I could feel the anticipation building. Once fully unrolled, I carefully cut away the final layer of plastic. It was fascinating to watch the mattress quickly begin to expand and take shape.One thing I appreciated was the minimal off-gassing odor. While there was a slight “new mattress” smell, it was far less noticeable than with many other bed-in-a-box mattresses I’ve tested. The odor dissipated completely within a few hours.The mattress reached its full 12-inch height within about 15 minutes, though Amerisleep recommends allowing up to 8 hours for it to fully expand. I was impressed by how quickly it was ready to use.The thoughtful layering and high-quality materials used in the AS3 Hybrid resulted in a mattress that not only met but exceeded my expectations for comfort, support, and temperature regulation. It’s clear that Amerisleep has put a great deal of thought and innovation into every aspect of this mattress’s construction.The Refresh CoverThe mattress is encased in Amerisleep’s proprietary Refresh Cover. As I ran my hand over the surface, I noticed its cool-to-the-touch feel. This cover isn’t just soft and comfortable. It’s a technological marvel. Infused with minerals that convert body heat into infrared energy, it’s designed to improve local blood flow and promote restful sleep.In my experience, this cover lived up to its promises. Even on warmer nights, I found that the surface remained pleasantly cool. The improved circulation claim is harder to verify, but I did notice that I woke up feeling more refreshed than usual, with less stiffness in my muscles.Comfort LayerBeneath the cover lies a 3-inch layer of Amerisleep’s Bio-Pur® foam. This isn’t your typical memory foam. As I pressed into it, I noticed how it contoured to my hand but quickly bounced back when I removed the pressure. This responsiveness is a game-changer for those who dislike the “stuck” feeling often associated with traditional memory foam.What impressed me most about this layer is its open-cell structure. Not only does this contribute to its responsiveness, but it also enhances breathability. Throughout my nights on this mattress, I never experienced the heat retention issues that often plague all-foam mattresses.The plant-based nature of this foam is an added bonus. While I couldn’t directly feel the difference, knowing that it’s partially made from renewable resources gave me peace of mind about my environmental impact.Pocketed Coil Support CoreThe foundation of the AS3 Hybrid is a robust 8-inch layer of pocketed coils. When I first lay down on the mattress, I immediately noticed the responsive support these coils provided. They adapted quickly to my body’s contours, offering support where I needed it most.What impressed me most about this layer was its ability to provide changeable support while minimizing motion transfer. When my partner moved during the night, I barely felt it—a significant improvement over traditional innerspring mattresses.The individually wrapped nature of these coils also contributes to the mattress’s breathability. I could almost feel the air circulating through the mattress, contributing to its overall cooling properties.Base LayerAt the very bottom is a 1-inch layer of high-density foam. While not directly perceptible when sleeping, this layer provides a stable foundation for the coils above, enhancing the mattress’s durability and longevity.Testing Sleep PositionsOne of the most critical aspects of testing mattresses is seeing how it performs across different sleep positions. As a sleep expert, I understand that each sleeping position has unique requirements for comfort and support.A truly versatile mattress should be able to accommodate various sleep styles while maintaining proper spinal alignment and reducing pressure points. My goal is to provide you with a detailed, first-hand account of how this mattress performs in each position, helping you understand if it’s the right fit for your sleep style.Throughout my testing, I paid close attention to factors such as pressure relief, spinal alignment, overall comfort, and ease of movement. I also considered how the mattress’s unique features, like the Bio-Pur® foam layer and pocketed coil system, contribute to the sleep experience in each position.Side SleepingWhen I lay on my side, I immediately noticed how the Bio-Pur® foam layer gently cradled my shoulders and hips. This contouring effect helped alleviate pressure points that often plague side sleepers.The medium firmness struck an ideal balance as a side sleeping mattress—soft enough to allow my shoulders and hips to sink in slightly, but firm enough to maintain proper spinal alignment.I woke up without the usual stiffness in my shoulders and hips that I sometimes experience with firmer mattresses. The zoned support of the HIVE® layer seemed to play a crucial role here, providing softer support where I needed it most.Back SleepingSwitching positions, I found the AS3 Hybrid equally accommodating as a back sleeping mattress. The mattress provided excellent lumbar support, which is crucial for back sleepers.As I lay on my back, I could feel the pocketed coils adapting to my body’s contours, supporting the natural curve of my spine. The Bio-Pur® foam layer on top provided just enough give to prevent any uncomfortable pressure on my lower back.What impressed me most in this position was how the mattress kept my spine aligned. I didn’t feel like I was sinking too deeply into the mattress, nor did I feel like I was lying on top of it. Instead, it was a perfect middle ground that promoted a neutral spine position.Stomach SleepingWhile I’m not primarily a stomach sleeper, I made sure to test this position thoroughly. Stomach sleeping can be tricky, as it requires a delicate balance of support to prevent the hips from sinking too deeply.I found that the AS3 Hybrid performed adequately as a mattress for stomach sleeping. Though, it may not be ideal for strict stomach sleepers, especially those on the heavier side. The medium firmness provided enough support to keep my hips from sinking too far, but I could see how someone who sleeps exclusively on their stomach might prefer a firmer surface.That said, for occasional stomach sleeping or for lighter-weight individuals, the AS3 Hybrid should suffice. The pocketed coils did a good job of providing support across my body, preventing any uncomfortable arching of the lower back.Combination SleepingThe responsive nature of the Bio-Pur® foam, combined with the bounce of the pocketed coils, made it incredibly easy to shift positions during the night. I never felt “stuck” in the mattress, which can be a common complaint with some memory foam mattresses.What’s more, the consistent comfort across sleeping positions meant that I remained comfortable regardless of how I moved during the night, a necessity in mattresses for combination sleeping. Whether I started on my side and ended up on my back, or vice versa, I woke up feeling well-rested and free from any stiffness or discomfort.The excellent motion isolation of the AS3 Hybrid is also a boon for combination sleepers who share a bed. My movements didn’t create much disturbance across the mattress, meaning a restless night for one partner doesn’t have to mean a restless night for both.How Responsive Is the Mattress?Responsiveness refers to how quickly a mattress adjusts to changes in pressure and movement. A highly responsive mattress will rapidly conform to your body when you lie down and quickly regain its shape when you move or get up.On such a mattress, you can change positions without feeling “stuck” or having to exert much effort. A responsive surface allows for smoother transitions, potentially reducing sleep disturbances and promoting more restful sleep.Moreover, mattresses that respond quickly to movement allow for better airflow as you shift positions, potentially helping to dissipate body heat and maintain a cooler sleep surface.Furthermore, by adapting quickly to your body’s contours, the bed provides immediate comfort and alleviating pressure points. This can be particularly important for side sleepers, who need quick conformant to their hips and shoulders to maintain proper spinal alignment.Knowing I needed to thoroughly see how this mattress reacts to all sorts of odd positions and quick movements, I found myself rolling, stumbling, and nearly somersaulting through a series of tests.First, I performed a succession of position changes, moving from my back to my side, then to my stomach, and back again. I paid close attention to how quickly the mattress adjusted to each new position. The AS3 Hybrid impressed me with its rapid adaptation, allowing me to shift positions with ease and without feeling “stuck” in the mattress.Next, I conducted what I call the “press and release” test. I applied firm pressure with my hand to various points on the mattress surface, then quickly removed it. The materials worked in tandem to respond almost instantly, with the mattress regaining its shape within seconds. This quick recovery is crucial for maintaining support and comfort throughout the night, especially for combination sleepers who change positions frequently.I also performed a “bounce test” by dropping a small, lightweight ball of 10 pounds onto the mattress surface from a consistent height. The ball’s rebound was swift and controlled, further demonstrating the mattress’s responsive nature. This characteristic is particularly beneficial for activities beyond sleep, such as sitting on the edge of the bed or changing clothes.To simulate getting in and out of bed, I sat on the edge and then quickly lay down, noting how rapidly the mattress adjusted to this sudden change in pressure distribution. The AS3 Hybrid responded swiftly, providing immediate support and comfort.Lastly, I evaluated the responsiveness across different areas of the mattress, including the center, edges, and corners. The performance was consistently high across all zones, indicating uniform responsiveness throughout the sleep surface.The 9 out of 10 score reflects the AS3 Hybrid’s ability to quickly adapt to changes in pressure and movement while still providing the contouring benefits of memory foam. This balance is achieved through the combination of the responsive Bio-Pur® foam and the supportive pocketed coil system.While the bed doesn’t quite reach a perfect 10, the surface still caters to a wide range of sleepers and sleep styles. Mattress Responsiveness Score 9 out of 10How Well Does the Mattress Isolate Motion?In practical terms, this feature means that when your partner moves, shifts position, or gets in and out of bed, you’re less likely to feel that movement on your side. When you’re not constantly jostled by your partner’s movements, you’re more likely to stay in deeper, more restorative sleep stages.For couples with different sleep schedules, effective motion isolation can allow one partner to enter or leave the bed without waking the other. Moreover, motion isolation can be especially important for those with certain health conditions, providing much needed stability for those sensitive to jarring movements.I would say that the Amerisleep AS3 Hybrid excels in motion isolation, earning an impressive 9 out of 10 in this critical category. To evaluate this, I took a hands-on approach that simulated real-world sleeping scenarios. This allowed me to experience firsthand how the mattress would perform for couples or individuals sharing a bed.To begin, I enlisted the help of a partner to conduct a series of movement tests. We started by having one person lie still on one side of the mattress while the other moved around, mimicking common sleep movements.I was impressed by how little movement I felt when my partner tossed and turned, changed positions, or even got in and out of bed. The Bio-Pur® foam layer seemed to absorb much of the motion at its source, preventing it from traveling across the mattress surface, excellent showing for a mattress for couples.Next, we switched positions, allowing my partner to provide feedback on their experience. They reported similar results, noting that they could barely feel my movements, even when I deliberately made more exaggerated motions. This consistency in performance regardless of position on the mattress was particularly noteworthy.I also tested the motion isolation by simulating a restless night’s sleep. I moved around frequently, alternating between gentle movements and more sudden, jarring motions. My partner, who is a light sleeper, reported that they were hardly disturbed by my movements. This is a testament to the AS3 Hybrid’s ability to dampen motion effectively.To further assess the mattress’s performance, we conducted a “sleep and wake” test. One person pretended to be asleep while the other got into and out of bed at various times. This test is particularly relevant for couples with different sleep schedules. I was pleasantly surprised by how little disturbance was caused when entering or exiting the bed, a common issue with many mattresses.Throughout all these tests, I paid close attention to how the mattress responded to movement. The pocketed coil system seemed to work in tandem with the foam layers to localize motion. When pressure was applied to one area of the mattress, the surrounding areas remained remarkably stable. This characteristic is crucial for preventing sleep disturbances caused by a partner’s movements.It’s worth noting that while the motion isolation was impressive, it wasn’t absolute. Under very close observation, I could detect slight movement during the most vigorous motions.However, this level of motion transfer was minimal and unlikely to disturb most sleepers. So yes, while the AS3 Hybrid’s motion isolation is excellent, it doesn’t quite reach a perfect 10.Still, the hybrid’s motion isolation performance is comparable to, and in many cases surpasses, that of all-foam mattresses, which are typically considered the gold standard for motion isolation. Particularly impressive, as including coils often results in more motion transfer compared to all-foam designs. Mattress Motion Isolation Score 9 out of 10How Does the Edge Support Hold Up?Edge support refers to how well a mattress maintains its shape and support around its perimeter. A mattress with good edge support feels stable and supportive when you sit or lie near the edge, without significant sagging or compression.It effectively increases the usable sleep surface of the mattress. When edges are firm and supportive, sleepers can comfortably use the entire mattress area without feeling like they might roll off.So couples sharing a smaller mattress can spread out and use the full width of the bed without feeling cramped or unsupported near the edges.Furthermore, for individuals with mobility issues, seniors, or anyone who struggles to get up from a lying position, firm edges also provide a stable surface to sit on and push off from when leaving the bed. This can make a significant difference in comfort and safety, especially for those who rely on the edge of the bed for support during this daily activity.Lastly, edge support is a good sign of how long a mattress will last. Edges that maintain their shape over time help prevent premature sagging and extend the life of the mattress.In my rigorous testing, I awarded the AS3 Hybrid a perfect score of 10 out of 10 in this category. The exceptional edge support of the AS3 Hybrid can be attributed to its thoughtful construction.See, the pocketed coil support core extends all the way to the edges of the mattress, providing robust support throughout. These coils are reinforced around the perimeter to enhance the sides’ stability.Here are the detailed observations I noted as I ran my tests.Sitting TestI began by sitting directly on the edge of the mattress at various points – corners and mid-points along each side. I paid close attention to how much the edge compressed under my weight and whether I felt stable or like I might slip off.When sitting on the edge, I noticed minimal compression. The edge held firm, providing a stable seating surface. This is particularly impressive for a hybrid mattress, as some tend to have softer edges.Lying TestNext, I lay down on the mattress, positioning myself right at the edge. I assessed how supported I felt and whether there was any sensation of “roll-off” that can occur with inferior edge support. I concluded that I felt just as supported as I did in the center of the mattress, even when I shifted my weight.I also evaluated how close to the edge I could comfortably drift off to sleep without feeling unsupported or at risk of falling out of bed. I found I could comfortably use the entire surface of the mattress, right up to the very edge. Handy for those sharing a bed!Getting In/Out of Bed SimulationI simulated the process of getting in and out of bed, using the edge as a support. This test is particularly important for those with mobility issues who rely on sturdy edges for support.Leaving the bed was a breeze, at least when it came to edge support (when it came to actual desire on my part to get up, not so much). The sturdy edge provided a solid foundation, making it easy to push off when getting up or sit comfortably when getting into bed.Weight DistributionFor my final test I brought back my set of weights to see how the edge responded to different pressure points, simulating various body types and sleeping positions. The edge support remained consistent all around the mattress perimeter, with no weak spots or areas of inconsistency.The hybrid’s edge support is a testament to Amerisleep’s commitment to quality and thoughtful design. It’s a feature that significantly enhances the overall user experience and contributes to the mattress’s versatility and durability. Mattress Edge Support Score 10 out of 10How Long Should the Mattress Last?One of the most common questions I get about any mattress I test is, “How long will this mattress last?” It’s a natural concern for shoppers to have, as no one wants to be the person that spent over $1000 on a bed that gives out within a couple of years.Still, this is always the part of my analysis that I get nervous about, as it’s one most rooted in educated guesswork. The short time I spend testing a mattress simply cannot 100 percent mimic the years one spends on it, even if I were to bodyslam myself into the bed to try and recapture the pressure from supporting a sleeper night after night.When it comes to the Amerisleep AS3 Hybrid, I estimate it should last about 7-10 years with proper care and use.The materials used in the bed, especially the density of the foam layers, are a crucial factor here. Higher-density foams generally last longer, and the AS3 Hybrid uses foams that fall into the medium to high-density range, which is a good sign for longevity.Pocketed coils like the ones inside the AS3 Hybrid also tend to be quite durable, resisting sagging due to their individualized design.Then, I consider Amerisleep’s warranty. They offer a 20-year warranty, with full replacement in the first 10 years. This shows the company’s confidence in their product’s durability as a mattress that won’t sag.I must note a warranty’s length doesn’t necessarily equate to the mattress’s comfortable lifespan. Some unscrupulous manufacturers even offer what sounds like a good length warranty, but include fine print clauses for what they will and will not cover. But I do not consider Ameirsleep one of these, as they have a well-established brand reputation and an easy-to-understand warranty.User reviews also play a role in my estimate. I’ve seen numerous reviews from customers who’ve had their AS3 Hybrid for 5+ years and still find it comfortable. This real-world data supports a longer lifespan projection. One recent reviewer did note their mattress sagged within three years, but this seems to be an outlier among otherwise satisfied customers.However, I must stress that this 7-10 year estimate is just that—an estimate. Many factors can influence a mattress’s lifespan:Body weight: Heavier individuals may experience faster wear.Sleep habits: How often you use the mattress and your sleep position can affect its longevity.Maintenance: Rotating the mattress regularly and using a mattress protector can extend its life.Environment: Factors like humidity and temperature can impact the mattress materials over time.It’s also worth noting that a mattress’s technical lifespan (how long it physically holds up) can be different from its comfort lifespan (how long it remains comfortable for you). Some people might find they need to replace their mattress earlier due to changes in their body or sleep preferences.I always advise mattress shoppers to pay attention to their sleep quality. If you start noticing a decline in comfort or support, or wake up with new aches and pains, it might be time to shop around, regardless of how long you’ve had the mattress.To close, I suggest remembering any mattress is an investment in your sleep health, and the AS3 Hybrid seems well-positioned to provide comfortable sleep for many years. Just keep in mind that my estimate is based on averages and generalities, and your personal experience may differ.Does the Mattress Sleep Cool?Temperature regulation is crucial for quality sleep. See, our body temperature naturally drops as we prepare for sleep and rises again as morning approaches.A cooling mattress works with this natural cycle, helping to maintain an optimal sleep temperature throughout the night. When we’re too warm, it can disrupt our sleep cycles, causing restlessness, frequent waking, and reduced time spent in the crucial deep sleep stages.In short, a bed that can’t stay cool may cost you precious sleep time. It’s not just about comfort—it’s a tool for promoting better sleep hygiene and overall health.It’s especially helpful for couples. Body heat from two people can compound the warming effect of a mattress, simply because there’s more to deal with. A cooling mattress helps mitigate this, allowing both partners to maintain comfortable body temperatures throughout the night.This is perhaps the aspect of every mattress that I most anticipate thoroughly testing, as I’m a firm proponent of cooling materials. It’s possible to sleep well on a bed with less-than-stellar motion isolation or edge support, after all. But on hot summer nights, you better believe that any mattress that functions as a heat sink is going to be keeping you up at night.Now it’s worth noting that “cooling” can be subjective, and what feels cool to me might feel different to someone else. However, based on my extensive experience testing mattresses and when comparing the AS3 Hybrid to numerous other models, I feel confident in awarding it a perfect 10 for cooling.My testing process for cooling is relatively straightforward but effective. First, I sleep on the mattress for several nights, paying close attention to how cool I feel throughout the night. I’m naturally a “hot sleeper” and live in a warmer climate, so I’m particularly sensitive to any heat buildup.With the AS3 Hybrid, I noticed immediately that I wasn’t waking up in the middle of the night feeling overheated, which is a common issue for me with many memory foam mattresses.I also conduct a “hand test,” where I press my hand into the mattress for 30 seconds and then remove it, timing how long it takes for the heat impression to dissipate. With the AS3 Hybrid, the cooling effect was almost immediate.Now, I have excellent materials to thank for this resilient comfort. The Bio-Pur® foam used in the comfort layer is more breathable than traditional memory foam, allowing for better airflow. The pocketed coil system in the support layer also promotes air circulation throughout the mattress.But I would say that cover fabric, with its specialty materials, establishes the greatest part of the bed’s cooling ability.Of course, individual experiences may vary, and factors like room temperature and bedding can also affect how cool you feel while sleeping. But in my professional opinion, if you’re looking for a mattress that excels in temperature regulation, the Amerisleep AS3 Hybrid is definitely one to consider. Mattress Cooling Score 10 out of 10Measuring the Environmental ImpactIn today’s world, consumers are increasingly aware of the environmental impact of their purchases, and the mattress industry is no exception. As a sleep expert and environmental enthusiast, I’ve observed a growing trend towards eco-friendly sleep solutions.The Amerisleep AS3 Hybrid stands at the forefront of this green revolution, offering a compelling balance between comfort, performance, and environmental responsibility.From its plant-based foams to its zero-emissions manufacturing, we’ll explore how these green initiatives not only benefit the planet but also contribute to a healthier sleep environment for users.Eco-Friendly MaterialsThe cornerstone of the AS3 Hybrid’s green credentials is its Bio-Pur® foam. Unlike conventional memory foam, which is entirely petroleum-based, Bio-Pur® incorporates plant-based oils in its production.This partial replacement of petrochemicals with renewable resources marks a significant step towards reducing the mattress’s overall carbon footprint.All foams used in the AS3 Hybrid, including the Bio-Pur® layer, are CertiPUR-US® certified. This certification ensures that the foams are made without ozone depleters, certain flame retardants, mercury, lead, and other heavy metals.It also guarantees low VOC (Volatile Organic Compound) emissions, contributing to better indoor air quality. During my sleep tests, I noticed minimal off-gassing, which is often a concern with foam-based mattresses.Manufacturing PracticesAmerisleep takes pride in its zero-emissions manufacturing process, which extends to the production of the AS3 Hybrid. This means that during the mattress’s creation, no harmful chemicals are released into the atmosphere.It’s a commendable approach that not only benefits the environment but potentially the end-user as well.In my experience testing the AS3 Hybrid, I found that this clean manufacturing process resulted in a mattress with less chemical odor upon unboxing. This is a noticeable improvement over many conventional mattresses in boxes that often require several days of airing out before use.Packaging and ShippingThe AS3 Hybrid is compressed to significantly reduce its size for shipping. This efficient packaging allows more mattresses to fit on a single delivery truck, thereby reducing the overall carbon emissions associated with transportation.When I received my AS3 Hybrid for testing, I was impressed by the compact nature of the package. Once unboxed, the mattress expanded quickly to its full size without any apparent loss in quality or comfort. Convenient for the consumer and beneficial for the environment.Durability and LongevityAn often overlooked aspect of environmental impact is a product’s lifespan. A durable mattress that lasts longer means fewer mattresses in landfills over time. The AS3 Hybrid, with its combination of high-density Bio-Pur® foam and pocketed coil system, appears built for longevity.During my tests, the surface demonstrated good resilience to regular use. The Bio-Pur® foam, in particular, seemed to maintain its shape and support better than some traditional memory foams I’ve tested.Balancing Eco-Friendliness with Other FactorsWhile the AS3 Hybrid’s green features are commendable, it’s crucial that an eco-friendly mattress delivers on its primary function. And in my sleep tests, I found that the AS3 Hybrid doesn’t compromise on comfort or support in its quest for eco-friendliness.Its medium feel provided a versatile sleeping surface suitable for a wide range of sleepers. The Bio-Pur® foam offered excellent pressure relief and contouring, while the pocketed coil system ensured proper spinal alignment and support. The improved breathability of the plant-based foam and coils contributed to a cooler sleep surface.It’s worth noting that while the AS3 Hybrid makes strides in eco-friendly design, it still contains a significant portion of synthetic materials. The pocketed coil system, while recyclable, is not biodegradable. Furthermore, the adhesives used in the mattress construction may not be as environmentally friendly as the Bio-Pur® foam.However, I maintain that every step towards more sustainable products counts. The AS3 Hybrid represents a solid compromise for those seeking to reduce their environmental impact without sacrificing sleep quality or easy affordability.It offers a balance of eco-consciousness and budget-friendly comfort that may be just right for many looking to make a more environmentally responsible choice in their mattress purchase.Potential DrawbacksNo mattress review of mine would be complete without an honest discussion of potential pitfalls. While the Amerisleep AS3 Hybrid has garnered overwhelmingly positive feedback and performed exceptionally well in my tests, it’s important to acknowledge that no mattress is perfect for everyone.It’s crucial to remember that many of these drawbacks are subjective and may not be issues for everyone. What one person considers a flaw, another might find perfectly acceptable or even preferable.Not for EveryoneWhile the AS3 Hybrid is one of Amerisleep’s more versatile offerings, it’s still not suited for all sleepers. No mattress is.Mostly, I think that it may not provide enough support for strict stomach sleepers, who typically require a firmer surface to maintain proper spinal alignment. Heavier sleepers over 230 pounds may also need a firmer mattress, while some lightweight individuals will benefit from a softer bed like the AS5 Hybrid.Some users also report needing time to adjust to the feel of the mattress. While this is not unusual, it can be frustrating for sleepers who want a stellar first night’s sleep.Possible Heat RetentionAlthough the AS3 Hybrid is designed with cooling features, some very hot sleepers might still find it retains more heat than they’d like. While this is not a common complaint and it wasn’t my personal experience with the bed, it’s worth noting that individual experiences with temperature regulation can vary widely.The comfort layer, while more breathable than traditional memory foam, still conforms closely to the body, which can potentially reduce air circulation and trap some heat. Consider using breathable, moisture-wicking sheets and lightweight bedding to enhance the cooling effects of the mattress.WeightHybrid mattresses are typically heavier than all-foam models due to the coil system. This could make the AS3 Hybrid more challenging to move or rotate, which might be a consideration for some users, particularly those living alone or with mobility issues.While this weight contributes to the mattress’s durability and support, it does make handling the mattress more difficult compared to lighter all-foam models.Off-GassingLike many bed-in-a-box mattresses with memory foam, the AS3 Hybrid may have a slight odor when first unpackaged. While this usually dissipates within a few days, it could be bothersome for those sensitive to smells. If you’re concerned about this, let the mattress air out in a well-ventilated room for a few hours before sleeping on it.However, I do want to note that the off-gassing I experienced didn’t last past the first night, which is a remarkably quick turnaround next to other memory foam mattresses.Potential for SaggingWhile rare, there’s one review mentioning sagging after three years of use. This suggests that, like all mattresses, the AS3 Hybrid may be susceptible to body impressions over time, especially for heavier individuals or those who sleep consistently in one position.In my testing period, I didn’t notice any signs of sagging or body impressions, but long-term durability is something that can only be truly assessed over years of use. Amerisleep’s 20-year warranty does provide some peace of mind in this regard, covering extensive sagging.What Other Customers Are SayingAfter conducting my own mattress tests, I always make a point to seek out other customer reviews. While manufacturer descriptions and specifications are helpful, user reviews provide insights into how the mattress performs in everyday use over extended periods.They also provide context and situations that my limited experience with any one mattress does not. I am but one woman with a specific set of habits and personal needs, and I find it educating what others notice, enjoy, or dislike about a mattress.Now, the AS3 has an impressive overall rating of 4.8 out of 5 stars from over 7000 reviews. Furthermore, the review summary states that 98% of respondents would recommend this mattress to a friend. This is an exceptionally high recommendation rate, suggesting that nearly all customers feel positively enough about their experience to endorse the product to others.But I didn’t want to just take in a generalized final score, and scrolled through dozens of reviews to see what individual points they made.I was quick to note that many reviewers praise the AS3 for its balance of comfort and support. Sleeper from Detroit mentions, “I love that you can sink into this but still feel like your body is supported in the right places.”This balance seems to work well for various sleep positions, with one health psychologist calling it the “best sleep I’ve ever had.”The bed even works for different comfort tastes within couples. Cass from Washington DC mentioned, “I love a soft fluffy bed and am a side sleeper and my husband is a back sleeper that prefers a rock. I was hesitant that it would be much too firm, but this is such an amazing middle ground.”Numerous reviewers also report improvements in back pain and other body aches. Jones from Saint Paul, MN, who had seven back surgeries, found the mattress “incredibly comfortable.” Another reviewer, RB from Atlanta, stated, “I can finally wake-up pain-free.”Several users noted that the AS3 sleeps cooler than other mattresses they’ve tried. A reviewer specifically mentioned, “We replaced our Tempurpedic mattress with the Amerisleep hybrid and find that it is not only comfortable but doesn’t sleep as hot.”While some users noted that the AS3 is a significant investment, many felt it was worth the price given its comfort and durability. Susan from Georgia said, “Although I splurged a little more than I normally do for this mattress, I absolutely have no regrets… It has been well worth the money.”As a show of how good an investment it can be,I looked for long-term users. I found most report satisfaction with the mattress’s performance over time. JenInNM from New Mexico shared, “We bought our first Amerisleep mattress 5 years ago. Now, it’s our guest bed. We just purchased a king sized mattress for our new bed and we love it!”Overall, concerns about the AS3 seemed minor. A few reviewers mentioned that the mattress was firmer than expected initially, though most adapted to it over time. One negative review focused on dissatisfaction with Amerisleep pillows rather than the mattress itself.Good customer service can also make this less of a drawback. As Cynthia from Gretna, LA noted, “Comfortable; was a little harder than exp. They sent me a topper that helped make it softer:)”However, it’s important to remember that even highly-rated products may not be perfect for everyone. The presence of a few lower ratings (like the 2-star review mentioning sagging after 3 years) underscores the importance of considering individual needs and preferences when choosing a mattress.Mattress Policies and PricesWhen shopping for a mattress, it’s crucial to look beyond just comfort and price. The policies that come with your purchase can significantly impact your overall satisfaction and peace of mind.These policies are designed to protect your investment and ensure you have ample opportunity to determine if the mattress is right for you. Understanding these policies is essential as they can affect your decision-making process and long-term satisfaction with your mattress.From the generous sleep trial period to the long-term warranty coverage, Amerisleep aims to provide customers with a risk-free purchasing experience.Sleep TrialAmerisleep gives you a chance to try out their mattresses for 100 nights without any risk. This means you can sleep on the mattress for more than three months to see if it’s perfect for you. If you don’t love it, you can send it back and get a full refund.The 100-night trial doesn’t start right when you buy the mattress. It begins when the mattress arrives at your home. If you also got an adjustable bed, the trial waits to start until both the mattress and bed are delivered.Amerisleep wants you to know that it might take some time for your body to get used to the new mattress. They say it could be up to 30 nights before you fully adjust. So if you feel a bit odd at first, don’t worry – this is normal and should improve over time.If you decide the mattress isn’t right for you, you need to tell Amerisleep before the 100 nights are over. But they ask that you sleep on it for at least 30 nights before making your final decision.Returning the mattress is easy and free. You don’t have to pack it up or ship it yourself. Amerisleep will send a team to pick up the mattress from your home at no cost to you. Once they take it away, they’ll process your refund.After you open your new mattress, you can get rid of the box and packaging. You don’t need to keep these for returns. Amerisleep does encourage you to recycle what you can to help the environment.WarrantyAmerisleep backs their mattresses with a 20-year promise to fix problems. This promise has two parts. In the first 10 years, if something goes wrong with your mattress because of how it was made, Amerisleep will give you a new one for free. For the next 10 years, they’ll still help, but you’ll need to pay some of the cost.What does this promise cover? It takes care of things like foam that cracks or zippers that break. If your mattress sinks more than 1.5 inches in the middle where you sleep, they’ll also fix that. But remember, this doesn’t include the edges or corners.The promise doesn’t cover everything, though. If your mattress just gets softer over time, that’s normal and not covered. Also, if you accidentally damage the mattress, that’s not included either.To keep this promise working, you need to do a few things. Use the right kind of bed base to support your mattress. Don’t take off the tag that comes on the mattress. Try not to let it get stained – using a mattress cover can help with this.If you think there’s a problem with your mattress, you’ll need to show Amerisleep that you bought it. They might ask for pictures of your bed frame too, to make sure you’re using the right support.One more thing to know: this promise only works for the person who first bought the mattress. If you give it to someone else or sell it, the promise doesn’t go with it.Sizes and PricesWhether you’re furnishing a child’s room, a guest bedroom, or a master suite, there’s an AS3 Hybrid to fit your space, as it comes in the usual mattress sizes.Amerisleep AS3 Hybrid SizeMattress PriceTwin Size$1199Twin XL Size$1249Full Size$1399Queen Size$1449King Size$1649California King Size$1649Split King Size$2548These prices position the AS3 Hybrid in the mid to premium segment of the hybrid mattress market, reflecting its quality materials and construction.When comparing the AS3 Hybrid to its other brands, consider both price and features. At this price point, the AS3 Hybrid competes with other well-known brands in the “bed-in-a-box” category, as well as some traditional mattress retailers’ offerings. In this price bracket you will find Bear, Tuft and Needle, Helix, and Winkbed hybrid mattresses, to name just a few.But while the AS3 Hybrid isn’t the most expensive option on the market, it’s certainly not a budget choice either. The plant-based materials could justify the price for environmentally conscious consumers, while others may look at more affordable options like the Vaya Hybrid.Caring for Your MattressNow, you might be thinking, “It’s just a mattress. How much care could it possibly need?” But remember, your Amerisleep AS3 Hybrid is more than just a mattress. It’s your loyal sleep companion, your reading and TV binging partner, and quite possibly the only one who truly understands your 3 a.m. existential crises.Treat it right, and it’ll be there for you through thick and thin, firm and plush, sweet dreams and insomnia-fueled sheep counting sessions.Regularly Rotate the BedFirst up on our care agenda: the quarterly mattress shuffle. Every three months or so, your AS3 Hybrid needs a change of perspective. We’re talking a full 180-degree spin, not just a half-hearted nudge.Now, officially Amerisleep says you don’t have to rotate the mattress to deter sagging, but I always believe that a little bit of precaution goes a long way.I’ve turned this chore into a full-blown spectacle, making a confused pet goldfish the “supervisor” of me huffing and puffing my way through a rotation. It’s not just mattress care; it’s performance art.Use a Mattress ProtectorInvest in a waterproof mattress protector. Think of it as a force field for your AS3 Hybrid, deflecting everything from drool to that green smoothie you swore wouldn’t spill.I learned this lesson after an accident caused my mattress to briefly resemble a Jackson Pollock painting, and not in a good way. Don’t be like me, and instead set up a defense against any spills that might otherwise mar your mattress.Crumb Busting and Spill WranglingNow, let’s chat about cleanliness. In my experience, mattresses are a magnet for every crumb, hair, and mysterious fuzzy thing in a five-mile radius.So it’s essential to arm yourself with a vacuum cleaner. Those dust bunnies don’t stand a chance against your suction prowess.Just make sure you’re gently using the upholstery attachment and not recklessly running the whole vacuum across the bed. And please, for the love of clean sheets, do this more often than your yearly spring cleaning frenzy.For liquid disasters (we’ve all been there with the midnight water bottle fumble), speed is key. Blot that spill like you’re dabbing sweat off a marathon runner. Remember, we’re aiming for ‘pristine sleep sanctuary’, not ‘tie-dye experiment gone wrong’.After cleaning the mattress, let it air dry before redressing it with your bedding.The Sniff TestOccasionally, give your AS3 Hybrid the ol’ nose test. It should smell like, well, nothing. If you’re catching whiffs of eau de gym sock or essence of last week’s takeout, it’s intervention time.A sprinkle of baking soda (not to be confused with powdered sugar—trust me on this one) can work wonders and freshen up a mattress. Let it sit for half an hour or more, vacuum it up, and voila! Your mattress now smells like… absolutely nothing. And that’s exactly what we want.Airing Out the SituationEvery so often, your mattress needs to breathe. Strip it down to its birthday suit and let it bask in the fresh air. Open those windows wide and let Mother Nature work her magic.Just be sure you don’t let the sunlight pool across your bed, as the UV rays can damage a mattress’s materials!Frequently Asked Questions Does the AS3 Hybrid need a box spring?No, it doesn’t, and doing so can even impact its design as most box springs don’t establish consistent support. However, the hybrid is built to work well with a variety of foundation types, including solid platforms, slatted bases (with slats no more than 3 inches apart), and adjustable bases.Using the mattress with a proper foundation is important for maintaining its warranty and ensuring optimal performance. If you prefer the height that a box spring provides, you can use one, but it’s not necessary for the mattress to function properly. How often should I clean the AS3 Hybrid?I would suggest that you vacuum the mattress surface monthly to remove dust and debris. Spot clean any stains as they occur using a mild detergent and water solution.For more thorough cleaning, consider deep cleaning the mattress every 6-12 months, following the manufacturer’s care instructions. Using a mattress protector can significantly reduce the need for frequent cleaning and protect against spills and stains. Will a new AS3 Hybrid hurt my back?It’s unlikely to, as it’s designed to provide balanced support and pressure relief. However, as with any new mattress, there may be an adjustment period as your body adapts to the new sleep surface.If you experience persistent discomfort, it’s advisable to consult with a healthcare professional to ensure the mattress is suitable for your specific back health needs. Does the Amerisleep AS3 Hybrid sleep cool?In my experience, yes, as several features promote cool sleep. Its Refresh Cover uses minerals to convert body heat into infrared energy, while the Bio-Pur® foam layer has an open-cell structure for better airflow. The pocketed coil support core also enhances air circulation throughout the mattress, contributing to its cooling properties.However, individual experiences may vary based on personal factors such as body composition and room temperature. Why choose the AS3 Hybrid over other models?The AS3 Hybrid offers a balanced medium feel that suits a wide range of sleepers, making it a versatile choice for individuals and couples with different preferences. Its hybrid construction combines the pressure-relieving benefits of memory foam with the responsiveness and support of pocketed coils, offering a “best of both worlds” sleep experience.Additionally, the AS3 Hybrid’s cooling features, motion isolation properties, and durability make it a well-rounded option for those seeking a high-quality mattress that addresses multiple sleep needs.ConclusionAfter spending considerable time testing and analyzing the Amerisleep AS3 Hybrid, I’m genuinely impressed. This mattress has earned a strong 9 out of 10 in my book, and I don’t give out high scores lightly.What struck me most was the AS3 Hybrid’s versatility. As someone who’s tested countless mattresses, I can confidently say this one caters to a wide range of sleepers. Its medium firmness hit a sweet spot that I found comfortable whether I was on my side, back, or switching positions throughout the night.I’m a naturally hot sleeper, so the cooling properties of this mattress were a game-changer for me. Night after night, I remained cool and comfortable, thanks to the clever combination of the Refresh Cover, breathable Bio-Pur® foam, and that airy pocketed coil system.As an environmentally conscious consumer, I also appreciate Amerisleep’s commitment to eco-friendly practices. Knowing I was sleeping on a mattress made with plant-based materials and produced in a zero-emissions process gave me peace of mind.While I recognize it may not be the perfect fit for everyone—particularly those at the extreme ends of the weight spectrum—I believe the AS3 Hybrid will suit most sleepers beautifully.The 100-night sleep trial and 20-year warranty are the cherries on top, providing that extra assurance I always look for. In my experience, it’s a decision you’re unlikely to regret.Final Score TallySleeper TypeEffect of High Motion TransferLight SleepersEasily disturbed by even small movements, leading to frequent awakenings.Restless SleepersMay cause issues for their partner by frequently moving or tossing and turning.Couples with Different Sleep SchedulesIf one partner goes to bed or wakes up at different times, a mattress with high motion transfer can cause frequent sleep disruptions.Pet OwnersPets moving on the bed can cause constant disturbances if the mattress transfers motion easily. About the author Sarah Anderson: Certified Sleep Coach and Mattress Tester CERTIFIED SLEEP COACH With nearly five years of experience as a certified sleep coach and mattress tester, Sarah Anderson is renowned for her detailed and nuanced content on mattress reviews and sleep health. Sarah’s expertise is backed by her degree in journalism from Arizona State University, which she earned in 2016.She has contributed to over a dozen respected publications, including 9NEWs, the Arizona Republic, and the Fresno Bee. Her articles are known for their thorough research and insightful analysis, making her a trusted voice in the sleep industry. Find more articles by Sarah Comments Cancel replyLeave a CommentYour email address will not be published. Required fields are marked * Comment Name Email I agree to the Privacy Policy of this website. Δ