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 TakeawaysThe AS5 excels in pressure relief and comfort for side sleepers.Innovative cooling technology keeps the mattress temperature-neutral.Responsive foam layers prevent the “stuck” feeling often associated with soft mattresses. ‘As a self-proclaimed mattress detective who’s spent more nights on test beds than my own, I approached the Amerisleep AS5 with a mix of curiosity and healthy skepticism. Could this ultra-soft mattress really deliver the cloud-like comfort it promised without sacrificing support?From the moment I unboxed the AS5, I knew I was in for an interesting experience. The cool-to-the-touch cover and the substantial 14-inch profile hinted at the advanced sleep technology within. I was eager to dive in (literally and figuratively) and put it through its paces, testing everything from its pressure relief to its responsiveness and cooling capabilities.What I discovered was a mattress that surprised and impressed me in many ways, earning a solid 9 out of 10 overall score. The AS5’s innovative combination of plant-based memory foam, responsive transition layers, and high-density support foam delivered a sleep experience that was both luxuriously plush and surprisingly supportive for such a soft mattress.Whether you’re a side sleeper seeking deep pressure relief, a hot sleeper looking for a cool embrace, or a couple in need of motion isolation without sacrificing responsiveness, this review will help you determine if the Amerisleep AS5 is the sleep solution you’ve been dreaming of.From its eco-friendly materials to its performance across different sleep positions, we’ll leave no layer unexplored in our quest to help you decide if the AS5 is your ticket to the soft, supportive sleep you deserve. Best Mattress: Amerisleep AS5 Price Range: $1599 to $3348Mattress Type: Memory FoamMattress Height: 14 inchesFirmness: Soft (3 on the firmness scale)Best for side sleepers who enjoy plush luxuryAvailable in twin, twin XL, full (double), queen, king, California king, and split king Warranty 20 Years Sleep Trial 100 Nights Shipping FreeMattress HighlightsPlush plant-based memory foamResponsive middle foam layersSupportive foam baseRecommended ForSide sleepersHot sleepersSome couples and combo sleepersSave $500 on the Amerisleep AS5 with our discount code. Claim Deal Inside the Mattress: Materials and ConstructionHaving had the opportunity to test the Amerisleep AS5 mattress, I can confidently say it’s a luxurious sleep experience that lives up to its ultra-soft billing.I almost didn’t want to pull myself away from it to write this review. Not when the soft top was cradling my left shoulder, sore from bad sitting posture on a car trip, and letting the pain gently ebb away with its support.But the sooner I finish this, the sooner I can slip back onto it and take a nap. So without further ado, let’s look at the five distinct layers that make up the AS5!Refresh CoverThe first thing I noticed was the cool-to-the-touch sensation of the cover. This isn’t just any ordinary mattress cover. It’s made with a special fiber that has high thermal conductivity, delivering instant chill.It’s not just cool; it’s almost slippery in a sleek, high-end way. It had a silky quality and I was surprised by how effortlessly I could move across the surface — it almost felt like I could slide right out of bed if I wasn’t careful!The cover is also designed to convert body heat into infrared energy, which is said to improve local blood flow and potentially aid in recovery. It’s a high-tech approach to sleep that you can feel working as soon as you lie down.Bio-Pur® FoamLying down on the AS5 feels like sinking into a welcoming pool of softness with this game-changer. The plant-based memory foam contours to your body immediately, creating a cozy cocoon effect.Despite its plushness, I found it responsive enough that I didn’t feel “stuck” when changing positions, and I watched it snap back into shape within seconds of me vacating the bed.Unlike traditional memory foam that can feel stifling, Bio-Pur® has an open-cell structure that allows for much better airflow. The plant-based materials also mean it’s more eco-friendly than traditional petroleum-based foams, and I noticed it didn’t have that strong “new mattress” smell often associated with memory foam.Active Flex LayerThis is a unique feature of the AS5, adding extra softness without sacrificing support. It’s part of what makes this mattress feel so luxurious—you get deep cushioning that still rebounds quickly. An extra layer that moves with you.When I moved around on the mattress, I could feel this layer working. It gave way easily under pressure but quickly regained its shape. This responsiveness prevents that “quicksand” feeling some ultra-soft mattresses can have.HIVE® Transition LayerHIVE® stands for Harnessing Intelligent Ventilation & Energy, and it’s a clever system of targeted support. This layer is divided into five zones, each with a different feel for the body.It’s not overtly noticeable so you might miss its presence when you lie down. But it does make a difference in overall comfort and spinal alignment.Even with the mattress’s ultra-soft feel, I could subtly feel the difference. The extra support under my lower back and the added cushioning for my shoulders and hips was appreciated, especially when I compared to too-soft mattress models I’ve tried before.The hexagonal cutouts in this layer also promote airflow, contributing to the mattress’s overall coolness.Bio-Core® BaseWhile you don’t directly interact with this sturdy layer, it’s crucial to the mattress’s performance.This base layer is what gives the AS5 its durability. It’s designed to prevent sagging and maintain the mattress’s shape over years of use. The high-density foam provides the foundation that allows Amerisleep to offer such a long warranty on their mattresses.Despite the softness of the upper layers, I was impressed by how stable the mattress felt, especially around the edges. I could sit comfortably on the side of the bed without feeling like I might slide off.Testing Sleep PositionsDuring my extensive testing of the Amerisleep AS5, I made sure to evaluate its performance across all major sleeping positions. As an ultra-soft mattress, it’s important to understand how it accommodates different sleep styles.I paid close attention to factors such as spinal alignment, pressure relief, comfort, and how easy it was to maintain each position throughout the night. Now, what works for one person may not work for another. However, there are general guidelines that can help determine a mattress’s suitability for each position.For side sleepers, pressure relief at the shoulders and hips is crucial. Back sleepers typically need a balance of support and comfort to maintain proper spinal alignment. Stomach sleepers usually require a firmer surface to prevent the hips from sinking too deeply. Combination sleepers benefit from a responsive mattress that allows for easy position changes.Side Sleeping: 10/10The AS5 truly shines as a mattress for side sleepers. As I lay on my side, I felt the plush top layers gently cradling my shoulders and hips, providing excellent pressure relief. The mattress allowed my body to sink in just enough to keep my spine properly aligned.I woke up feeling refreshed, with no signs of the shoulder or hip pain that I sometimes experience on firmer mattresses. The AS5’s ultra-soft feel seems tailor-made for side sleepers, offering that cloud-like comfort many crave.Back Sleeping: 5/10While not uncomfortable per se, back sleeping on the AS5 left something to be desired. The ultra-soft nature of the mattress allowed my hips to sink in more than ideal, which can be why someone frequently wakes up with morning back pain. I didn’t experience immediate discomfort, but after a full night of back sleeping, I did notice a slight lower back ache.For occasional back sleeping or just daytime lounging, it’s okay. But I wouldn’t recommend it as a dedicated mattress for back sleeping.Stomach Sleeping: 3/10I cannot recommend the AS5 as a mattress for stomach sleepers. When lying on my stomach, I felt my hips sinking in significantly, causing an uncomfortable arch in my lower back.After about an hour of this position, I started to feel strain in my lower back. And when I sat up I felt a stiffness in my shoulders and neck, the strain on my abdomen area ready to radiate outwardFor those who occasionally flip onto their stomachs during the night, it might be tolerable for short periods. But for predominant stomach sleepers, this mattress is likely to lead to discomfort and potential back issues over time.Combination Sleeping: 7/10I found the AS5 to be serviceable as a combo sleeper mattress, though not perfect. When switching from side to back, the mattress responded fairly quickly, adapting to my new position.However, moving to my stomach felt less comfortable. The plushness that makes it great for side sleeping means you sink in quite a bit, which can feel a bit awkward when trying to change positions.That said, if your combination sleeping primarily involves side and back positions, you might find the AS5 more suitable than if you frequently switch to your stomach. Or if you often switch to your stomach, sleeping with a body pillow can deter that.How Responsive Is the Mattress?Responsiveness refers to how quickly a mattress adapts to changes in pressure and weight distribution. It’s crucial for several reasons: ease of movement during sleep, comfort for combination sleepers, ease of getting in and out of bed.But essentially, a responsive mattress makes it easier to change positions during sleep, reducing the likelihood of feeling “stuck” or expending more energy to move. Being trapped in bed can be fun to imagine when you’re feeling overtired, but the reality is just aggravating.So, to assess the AS5’s responsiveness, I conducted several tests:In the press and release test, I pressed my hand firmly into different areas of the mattress and observed how quickly it regained its shape. The AS5 bounced back almost immediately, much faster than I expected from such a soft mattress.During the rolling test, I rolled from my back to my side and then to my stomach, noting how the mattress adapted. The AS5 quickly conformed to my new position each time, providing consistent comfort without any lag.I also performed a quick movement test, deliberately making sudden movements like quickly sitting up or flopping onto the bed. The mattress adjusted rapidly, without that sinking or “quicksand” feeling often associated with very soft foam mattresses.In the partner disturbance test, my partner and I took turns moving around while the other lay still. We found that our movements were well-absorbed, yet the mattress remained responsive to our individual positions.In the ball weight test, I dropped a 10-pound weighted ball onto the bed and observed if it bounced back up, as a gauge of the mattress’s pushback ability. I watched the ball leap back up about an inch or two before settling into the cushion.What impressed me most was how the AS5 managed to combine this high level of responsiveness with its ultra-soft feel. Typically, very soft mattresses can feel sluggish, but the AS5’s Bio-Pur® foam and Active Flex layer work together to create a surface that’s both plush and quick to respond.The reason I didn’t give it a perfect 10 is that there’s still a slight delay compared to innerspring or latex mattresses, which are typically the gold standard for responsiveness. However, I admit this may be a bit of comparing apples to oranges. For a memory foam mattress, especially one this soft, the AS5’s performance is exceptional. Mattress Responsiveness Score 9 out of 10How Well Does the Mattress Isolate Motion?Motion isolation is important because it prevents disturbances caused by a partner’s movements during the night. Whether it’s tossing and turning, getting up for a midnight snack, or even just shifting positions, good motion isolation ensures that these movements don’t disrupt the other person’s sleep.It’s a crucial feature for couples or anyone sharing a bed, as it determines how much movement is transferred across the mattress surface. And investing in a mattress with exemplemary motion isolation can lead to more restful nights and better overall sleep quality for both individuals.And the Amerisleep AS5 excels in motion isolation, earning an impressive 9 out of 10 in this category. To test the AS5’s motion isolation capabilities, I conducted several experiments.First, my partner and I took turns getting in and out of bed while the other person lay still with their eyes closed. We were both surprised at how little movement we felt. Even when one of us deliberately tossed and turned, the other person experienced minimal disturbance.I also tried a more extreme test by dropping the 10-pound weighted ball from about a couple feet above the mattress surface while my partner lay on the other side (don’t try this at home kids). Again, the AS5 performed admirably, with my partner reporting only a slight sensation of impact.Lastly, I tried the famous glass of water test, which I usually avoid because I hate cleaning up any spills. But I felt the AS5 deserved the extra effort form me.So I placed a nearly full glass of water on one side of the bed and then moved around vigorously on the other side. I was impressed to see that the water in the glass barely rippled, indicating excellent motion absorption.The AS5’s impressive motion isolation can be attributed to its all-foam construction and the properties of the Bio-Pur® foam. The material’s ability to absorb and dampen movement is truly exceptional, especially considering how responsive the mattress is overall.The reason I didn’t give it a perfect 10 is that there was still a tiny bit of motion transfer detectable in the most extreme scenarios, like jumping on the bed. However, for normal sleep movements, the isolation is nearly perfect. Mattress Motion Isolation Score 9 out of 10How Does the Edge Support Hold Up?Edge support refers to how well a mattress holds up around its borders, preventing that feeling of rolling off when you’re near the edge, whether sleeping or sitting.While important for everyone, good edge support is particularly crucial for those with disabilities or mobility issues. It provides a stable surface to push against when getting into or out of bed, making these transitions safer and easier.Edge support also expands the usable sleep surface, allowing comfortable use of the entire mattress right up to the very edge. This is helpful if you’re sleeping on a smaller twin mattress or sharing a bed for two.It’s also a rare feature in plusher mattresses, so I was surprised and thrilled to find the AS5 proves that’s just a design flaw in lesser mattresses. Despite being an ultra-soft mattress, the AS5 manages to maintain remarkable stability around its perimeter, earning a perfect 10 out of 10 in this crucial category.To thoroughly assess this feature, I performed several tests that anyone considering this or any other mattress might want to try themselves.First, I sat on the edge of the mattress in various positions—upright with my feet on the floor, and then with my legs extended on the bed. In both cases, I felt remarkably secure. There was some compression, as expected from an ultra-soft mattress, but I never felt like I was sliding off or losing my balance.I also performed the “stand-up test.” Starting from my seated position on the edge, I pushed off to stand up. The edge provided a steady base, making the transition smooth and easy – a crucial factor for those with mobility issues.Next, I tried the “lie-down test.” I positioned myself right at the edge of the mattress, with my body parallel to it. Surprisingly, even in this precarious position, I felt immovable. The edge held fast, and I didn’t experience anything close to the dreaded sensation of the mattress giving way, like a conveyor belt taking me over the sides.Finally, I tested the corners, often the weakest point in a mattress’s edge support. I sat directly on a corner and was pleasantly surprised by how well it held up, barely dipping under my weight.This superior edge support is likely due to the AS5’s thoughtful construction, particularly its sturdy Bio-Core® base layer. This high-density foam provides a strong foundation that extends right to the mattress’s edges, ensuring consistent support across the entire surface.For anyone, but especially those with disabilities or mobility issues, the AS5’s outstanding edge support adds an extra layer of safety, comfort, and usability to an already luxurious sleep experience. It’s a feature that truly sets this mattress apart, especially among softer options. Mattress Edge Support Score 10 out of 10How Long Should the Mattress Last?As someone who has extensively tested this mattress, I can only provide insights based on its initial quality and construction, along with the experiences of longer-term users. Which are quite difficult to find I’ve found, as most people post their reactions to a mattress online within the first year of ownership.Now, in my experience softer mattresses like the AS5 can be more prone to losing their comfort over time. The plush layers that provide that luxurious, cloud-like feel can potentially compress and flatten more quickly than firmer foams.The materials work harder to cushion and contour to the body, which potentially leads to faster wear.To a degree, you might have to accept this as the inevitable tradeoff for sleeping on a fluffy cloud every night. One just simply can’t plump up a flat mattress the way you can with a flat pillow. However, I have good cause to believe that the AS5 will resist your wear and tear usage for quite some time.My optimism stems from several factors:Quality of Materials: The Bio-Pur® foam used in the AS5 is of high quality and designed to be more resilient than traditional memory foam, snapping back swiftly into its original shape as a measure of its fortitude.Layered Construction: The AS5’s multi-layer design helps distribute weight and pressure more evenly. This could potentially slow down the wear on the softer top layers.Customer Feedback: While my personal test period was limited, I’ve read numerous reviews from long-term users who report that their AS5 has maintained its comfort and shape well beyond what they expected from such a soft mattress.Warranty: Amerisleep’s 20-year warranty suggests confidence in their product’s durability. While warranties don’t guarantee performance, they often indicate the manufacturer’s faith in their product.Personal Observations: During my testing period, I noticed that the mattress consistently returned to its original shape after use, without any noticeable permanent indentations.That being said, the true test of durability comes with years of nightly use. Factors like body weight, sleep positions, and how well a mattress is cared for (using a proper foundation, rotating regularly, etc.) will all play a role in whether or not its a mattress that won’t sag.While I can’t predict with certainty how the AS5 will perform years down the line, based on its construction, the quality of materials used, and the positive experiences of longer-term users, I’m optimistic about its potential for lasting comfort.As with any mattress, particularly a softer one, some gradual changes in feel over time should be expected. No one mattress lasts forever, after all. However, I believe the AS5 is well-positioned to maintain its supportive, plush comfort for longer than many of its ultra-soft counterparts.Does the Mattress Keep Cool at Night?Our body temperature naturally drops as we prepare for sleep and rises again as morning approaches. A mattress that retains heat can disrupt this natural cycle, leading to restless nights and poor sleep quality.For those who naturally sleep “hot” or live in warm climates, a cooling mattress can be the difference between tossing and turning all night and waking up refreshed. And the Amerisleep AS5 truly excels in the realm of cooling and breathability, earning a perfect 10 out of 10 in my book.The AS5’s cooling prowess starts with its Refresh Cover. This isn’t just regurgitated marketing hype—I could feel the coolness to the touch every time I lay down. The cover uses advanced fiber technology to actively draw heat away from the body, creating a surface that stays pleasantly icy throughout the night, like my own little frozen lake to lie upon.Beneath the cover, the Bio-Pur® foam layer continues the cooling mission. Unlike traditional memory foam that can trap heat, Bio-Pur®’s open-cell structure allows for significantly better airflow. This means that any heat that does build up can easily dissipate, rather than creating a warm pocket around your body.During the recent summer heatwave, I slept on the AS5 without air conditioning. Despite the warm room temperature, I found that the mattress remained remarkably cool to the touch. I didn’t experience the usual stickiness or discomfort I’ve felt with other mattresses in similar conditions.On weekends, I deliberately stayed in bed for extended periods, sometimes up to 10 hours total as I spent my morning lounging. Even after such long periods, I didn’t notice any uncomfortable heat build-up, which is often an issue with less breathable mattresses.To really stress test the bed’s cooling ability, I engaged in high-intensity exercise close to bedtime to raise my body temperature. When I lay down on the AS5 immediately after, I was impressed by how quickly it seemed to help dissipate my excess body heat, allowing me to cool down and fall asleep comfortably.I still wouldn’t recommend being so active close to bedtime, as my brain was certainly buzzing for a while afterward. But it showed me how the mattress performed under fire, maintaining the proverbial cool head.See, the AS5’s performance isn’t just about initial coolness—it’s about maintaining a comfortable sleeping temperature throughout the night, which is more difficult to accomplish. Yet time and again, I woke up feeling refreshed, without the clammy discomfort often associated with less breathable mattresses. Mattress Cooling Score 10 out of 10Measuring the Environmental ImpactSustainable mattresses matter more than ever in our current climate crisis, and for good reason. As someone who’s deeply invested in both quality sleep and environmental stewardship, I’ve found that the intersection of these concerns in the mattress industry is a fascinating and crucial area to explore.So when considering the environmental impact of choosing an Amerisleep AS5 mattress, I find myself both impressed and cautiously optimistic.On one hand, Amerisleep’s commitment to eco-friendly production and materials is commendable. Their Bio-Pur® foam, partially made from plant-based oils, reduces reliance on petroleum-based products. This is a step in the right direction, though I can’t help but wonder about the exact percentage of plant-based materials used.I appreciate that the foam layers are CertiPUR-US® certified, indicating low VOC emissions and the absence of certain harmful chemicals. This is not only better for the environment but also for the air quality in my home.The synthetic foams used in most memory foam mattresses, including those with plant-based components, are produced through processes that inherently lead to some level of off-gassing.This reality makes Amerisleep’s low-VOC approach with their Bio-Pur® foam more noteworthy, even if it’s not a perfect solution.For those of us seeking the absolute minimum in VOC emissions, we’d likely need to look beyond memory foam entirely, perhaps towards all-natural latex, organic cotton, or wool mattresses. However, these options often come with their own sets of trade-offs in terms of comfort, durability, or cost.The mattress’s resistance to dust mites, mold and mildew is another plus, potentially reducing the need for chemical treatments or frequent replacements due to allergen build-up.The durability factor also plays into the environmental equation. With a 20-year warranty and claims of superior longevity compared to traditional memory foam, an AS5 mattress could mean fewer replacements over time, potentially reducing waste. But as I noted above, expected durability can be a hard figure to fact-check.I’m also intrigued by their shipping methods. The claim that they can fit three rolled mattresses in the space of one flat mattress, potentially reducing carbon emissions from transportation by up to 80%, is significant. This is pretty standard practice among bed in a box mattresses, though.What Others Are SayingWhen considering a major purchase like a mattress, reading customer reviews is an invaluable part of the decision-making process. These firsthand accounts offer insights that go beyond manufacturer descriptions or expert reviews, providing a real-world perspective on how the product performs over time and for various types of sleepers.It’s also important to look for patterns in the reviews. While individual experiences can vary greatly, if multiple reviewers mention the same pros or cons, it’s likely to be a consistent feature of the product.With a 4.7 out of 5 star rating and 96% of respondents recommending it to friends, I was awestruck by the AS5’s overwhelmingly positive feedback.I was particularly impressed by the range of sleepers who’ve found comfort with the AS5. From those with chronic pain to couples with different sleep preferences, it seems to cater to a wide audience.I paid close attention to the frequency of specific pros and cons mentioned by users, helped by Amerisleep tracking repeated keywords and highlighting them at the top. The repeated positive keywords suggest that the AS5 delivers on its promise of comfort and support while maintaining its shape over time.Interestingly, more users found the mattress too hard than too soft, despite its ultra-soft classification. This highlights the subjective nature of mattress comfort.So while the majority of reviews are glowing, do keep in mind that personal preference plays a significant role in mattress satisfaction. What works wonderfully for one person might not be perfect for another.One reviewer, Lefty from Wise, VA, shared a compelling story: “I’m 44 years old and recently found out that I was born with deformed hips, shoulder joints and a flat and narrow spine. I have searched my whole life for a mattress that didn’t cause hip and back pain… This mattress is the right amount of soft and firm, you can sleep on your side or back. Needless to say I’m a customer for life now.”This sentiment is echoed by many others, including Victoria from Tampa, FL, who reported that the AS5 “effectively reliev[ed] pressure points and significantly reduc[ed] my discomfort.”Meg from Asheville, NC, summed it up well. “I wanted something luxurious and soft but that would be long lasting and hold its shape. This bed does not disappoint. I’m a side sleeper (but tend to move around). I’ve never been so still and comfortable throughout the night.”The balance of softness and support seems to be a key factor in the AS5’s success. Pablo from Ogden, Utah, described it as “a great mattress, and much softer” than other brands he had tried, while still being “sturdy, and heavy – which tells me it’s well-built.”Durability was another aspect that caught my eye. Andrea from PA reported, “I have had this mattress for almost 5 years now. Still fantastic and the best one I have owed. 2 adults and 2 dogs sleep on this mattress and still holding shape. No sagging or loss of shape.”However, as I read through the comments, I also noted some constructive criticism. A few users mentioned that the edge support could be improved. NotABarbie from Oak Park, CA, said, “I wish it were not so tall and had more edge support, since I sit on the edge of my bed a lot.”Potential DrawbacksWhile the Amerisleep AS5 has received overwhelmingly positive feedback, it’s important to consider potential drawbacks to make an informed decision. Based on my personal experience and analysis of customer reviews, here are some potential issues to keep in mind.Not Ideal for All Sleep PositionsLet’s start off with the obvious caveat that soft mattresses aren’t for everyone. Even a top-of-the-line soft mattress can’t overcome the simple fact that it can feel uncomfortable for some, simply because of their body type or preferred position.In my testing, I found that while the AS5 excels for side sleepers, it may not be the best choice for strict back or stomach sleepers due to its ultra-soft nature. This could lead to discomfort or improper spinal alignment for these sleep positions.Firmness MismatchDespite being marketed as an ultra-soft mattress, 44 reviewers found it “Too Hard.” This was surprisingly more common than complaints about it being “Too Soft” (10 mentions), which I was expecting would displease some reviewers.This discrepancy highlights how subjective mattress comfort can be. It also is a good reminder of how important a sleep trial is.That only about 2 percent thought it was too soft is a good sign, though. And only about 8 percent of total reviewers thought it was too firm. So overall, the AS5 still has a good track record of pleasing people with its feel.Developing DipNine users reported that the mattress “Develops Cavity” over time, and not the kind that teeth get. While this is a small number compared to the positive reviews, about equal to 2 percent of total reviewers, it’s still worth noting.This could potentially affect the mattress’s long-term comfort and support, especially for heavier individuals or couples.Heat RetentionAlthough only two reviewers mentioned that the mattress “Sleeps hot,” this could be a concern for those who tend to overheat during sleep. While the Bio-Pur® foam is designed to be more breathable than traditional memory foam, some users might still find it retains more heat than they prefer.Price PointWhile not explicitly mentioned in most reviews, the AS5 is one of Amerisleep’s most expensive models. This is due to the fact that it simply requires more materials than their other models.You can see this reflected in who bought the mattress, as Amerisleep shows whether shoppers identify as high-end, mid-range, or budget shoppers. Unsurprisingly, more people self-reported as the first two.For budget shoppers (57 of whom reviewed the mattress), the higher price point could be a significant drawback, especially when compared to more affordable options in the market.Adjustment PeriodSome users, myself included, noted that there’s an adjustment period when first using the AS5. If you’re used to a firmer mattress, it might take some time to get accustomed to the plush feel of the AS5.Off-GassingAlthough not widely reported in the reviews, some memory foam mattresses, including the AS5, may have a slight odor when first unpacked. This typically dissipates within a few days but could be bothersome for those sensitive to smells.Mattress Policies and PricesThe Amerisleep AS5, a premium ultra-soft mattress, offers a range of features and benefits, but it’s equally important to be aware of the company’s sleep trial, warranty, and pricing structure.Understanding these aspects is crucial for making an informed decision. After all, a mattress is not just a product but an investment in your sleep quality and overall well-being.Whether you’re comparing the AS5 to other premium mattresses or simply want to know what to expect after your purchase, this information will provide you with a clear picture of what Amerisleep offers beyond the physical product itself.Sleep TrialWhen you buy an Amerisleep mattress, you get a chance to really test it out at home. This is called the sleep trial, and here’s how it works:You have 100 nights to sleep on your new mattress. That’s more than three months!Amerisleep wants you to give the mattress a fair shot. They ask that you sleep on it for at least 30 nights before deciding. This is because it can take some time for your body to get used to a new mattress.If after 30 nights (but before 100 nights) you decide the mattress isn’t right for you, you can return it.To return the mattress, you’ll need to contact Amerisleep. They’ll give you instructions on how to proceed for a full refund. You don’t have to pay for shipping it back.It’s important to know that this trial only applies to mattresses. Other items like bed bases, pillows, and sheets can’t be returned under this policy.Also, if you got any free items with your mattress, you’ll need to return those too, or their value will be taken out of your refund.Remember, the goal of this trial is to make sure you’re happy with your mattress. Amerisleep wants you to have plenty of time to decide if it’s the right fit for you. If it’s not, they make it easy to return it and get your money back.WarrantyAmerisleep offers a 20-year warranty on their mattresses. This applies to both memory foam and hybrid models.The warranty is prorated after the first decade of ownership. During the first ten years, you can have a full mattress replacement. After this, you’ll need to pay 50% of the original purchase price to replace your mattress. You’re also responsible for all associated costs like shipping and labor.Make sure to tuck away your original receipt or proof of purchase, as you’ll need it in the event of a possible claim. You might also need to provide photos of your mattress and the foundation it’s on.What’s Covered:Structural defects due to faulty workmanshipVisible indentations greater than 1.5 inches in the middle of the mattressCracks in the foamManufacturing defects in the removable cover’s zipperWhat’s Not Covered:Normal wear and tearIncrease in foam softness over timeDamage from improper handling or useComfort preference changesThe warranty also only applies to the original purchaser. If you give away or sell the mattress, the new owner isn’t covered. This is standard warranty terms, and not just within the mattress industry.To Keep Your Warranty Valid:Use a proper foundation (solid, non-spring, or an Amerisleep bed frame)If using a slatted base, make sure slats are no more than 2.75 inches apartConsider using a mattress protector to prevent stainsLeave the mattress tagAnd this warranty is only valid for customers in the U.S. and Canada, with some special conditions for Alaska, Hawaii, and Canadian customers.Sizes and PricesThe Amerisleep AS5 is available in a range of standard sizes to accommodate various sleep preferences and room dimensions. Each size is designed to provide the same ultra-soft comfort and support.Amerisleep AS3 Hybrid SizeMattress PriceTwin Size$1599Twin XL Size$1649Full Size$1799Queen Size$1849King Size$2149California King Size$2149Split King Size$3348While the twin sizes might seem pricey for smaller mattresses, they’re well-suited for single sleepers who want the luxurious feel of the AS5 in a more compact size. And the price jump from twin to full to queen size is relatively modest, making the queen a popular choice for couples or individuals who enjoy more space.It’s worth noting that these prices position the AS5 in the higher end of the mattress market. This reflects its use of premium materials like the Bio-Pur® foam and its sophisticated construction.It’s more expensive than many popular bed-in-a-box options like Casper, Purple, or Nectar, which typically range from $1,000 to $1,500 for a queen size. However, it’s priced comparably to or even lower than some other luxury brands like Tempur-Pedic or Aireloom, which can often exceed $3,000 for a queen size.When compared to other ultra-soft or plush mattresses, the AS5’s price is more competitive. However, whether it represents good value will depend on individual needs and budget constraints.Care and CleaningCaring for and cleaning a soft all-foam mattress like the Amerisleep AS5 is relatively straightforward, but there are a few key points to keep in mind to ensure its longevity and maintain its comfort.Trust me, I’ve learned some of these lessons the hard way! Learn from my mistakes and avoid having to replace your mattress early.Envelop with a ProtectorFirst and foremost, prevention is your best friend. I was recently reminded of this wisdom when I spilled some coffee in bed–glad I had my trusty mattress protector wrapped around the bed.I always, repeat always, recommend using a high-quality, waterproof mattress protector from day one. This simple step can save you a lot of headaches down the line, shielding your mattress from spills, sweat, and other potential stains.Vacuum the BedFor regular maintenance, vacuum the mattress surface every few months using the upholstery attachment. This helps remove dust, dead skin cells, and other particles that can accumulate over time.I make this a part of my seasonal cleaning routine–nothing like the satisfaction of seeing all that invisible dust disappear! However, be gentle to avoid damaging the foam. Don’t press the vacuum hose too hard into the surface.Spot Clean Spills and StainsIf you do end up with a stain, tackle it promptly. Use a mild detergent mixed with cold water and dab at the stain with a clean, white cloth. Avoid saturating the foam, as excess moisture can lead to mold or mildew. Once you’ve treated the stain, use a fan to ensure the area dries completely.I once made the mistake of using too much water on a small stain when cleaning the mattress. It took forever to dry and I was paranoid about mold for weeks!Mattress RotationInterestingly, the manufacturer states that rotation isn’t necessary for this type of mattress. The materials are designed to maintain their shape and support without the need for flipping or rotating the mattress.However, I know from personal experience that old habits die hard. If rotating your mattress gives you peace of mind, there’s no harm in doing so every three to six months. I still find myself rotating mine occasionally, mostly because it’s what my mom always taught me to do!Just remember that these all-foam mattresses are often quite heavy, so don’t hesitate to ask for help if you decide to rotate. My partner and I make it a team effort, and it’s become a bit of a quarterly bonding activity, believe it or not. We heave-ho and high-five each other afterward.Let the Mattress BreatheOne last tip: give your mattress some air now and then. When changing your sheets, let the mattress breathe for an hour or two before making the bed. This can help freshen it up and reduce any lingering odors.And if things really start to stink from sweat and such, try sprinkling baking soda and vacuuming it up a few hours later. I discovered this trick after a particularly hot summer, and it works wonders! Just be prepared for your bedroom to look like a winter wonderland (or less poetically, like the mattress has dandruff) for a few hours. Frequently Asked Questions What type of mattress is the softest and squishiest?Typically, it’s an ultra-plush or extra-soft memory foam mattress, like the Amerisleep AS5. These mattresses are designed with multiple layers of soft, conforming foam that allow for deep sinkage and pressure relief.Some hybrid mattresses with cushy pillow tops can also feel pretty darn soft, but they usually have a bit more bounce to them. Can I put plywood under the AS5?Yes, you can put plywood under the Amerisleep AS5 mattress, and in some cases, it might even be beneficial. Adding a plywood layer can provide additional support, especially if you’re using a box spring or a slatted bed frame with gaps wider than 3 inches apart. This extra support can help prevent sagging and extend the life of your mattress.If you do decide to use plywood, make sure it’s at least 0.75 inches thick and covers the entire surface area of the bed frame to provide even support.Keep in mind that while plywood can add support, it may also affect the mattress’s breathability. To mitigate this, you could drill some small holes in the plywood to allow for air circulation. Always ensure the plywood is clean, smooth, and free of splinters to protect your mattress. How likely is the mattress to sag?Based on user reviews and the mattress construction, the Amerisleep AS5 seems to be quite resistant to sagging. Many long-term users report that the mattress has maintained its shape and comfort over extended periods, even with regular use.For instance, one customer mentioned using the mattress for almost 5 years with two adults and two dogs, and it was still holding its shape without sagging. The durability likely comes from the high-quality materials used, particularly the Bio-Core® base layer which is designed to provide long-lasting support.However, it’s important to note that all mattresses will experience some degree of wear over time. Proper care, such as rotating the mattress regularly and using a suitable foundation, can help prevent premature sagging and extend the lifespan of the AS5. Is the AS5 good for your back?Well, that’s a bit of a “it depends” situation. If you’re a side sleeper, this ultra-soft mattress could be your back’s new best friend. It lets your hips and shoulders sink in just right, which can help keep your spine nice and aligned.But here’s the thing—if you’re more of a back or stomach sleeper, you might want to think twice. The AS5 is so soft that it might not give your back the support it needs in those positions. Your hips could sink in too much, and next thing you know, you’re waking up feeling like you’ve done a backbend in your sleep!At the end of the day, everyone’s back is different. If you’ve got specific back issues, it’s probably a good idea to chat with your doctor about what kind of mattress would work best for you. They might have some insights that could really help you out! Why might I not want the AS5?You might not want the AS5 if you prefer a firmer sleep surface. As an ultra-soft mattress, it may not provide enough support for stomach sleepers or those who need a more rigid surface for back pain relief.Some users have reported that it feels too plush, leading to a sense of sinking too deeply into the mattress. Of course, others have thought it too firm, which may be another reason to avoid it.Another reason to reconsider the AS5 is its price point. It’s one of Amerisleep’s premium models, which means it comes with a higher cost. If you’re on a tight budget or don’t need all the extra features, you might find better value in a more affordable option. Is it actually good to sleep on a very soft mattress?Whether it’s good to sleep on a very soft mattress largely depends on individual preferences and sleep needs. For side sleepers and those with joint pain, a very soft mattress can provide excellent pressure relief by allowing the hips and shoulders to sink in comfortably.However, for stomach sleepers or those with back pain, an ultra-soft mattress might not provide enough support to maintain proper spinal alignment.Additionally, heavier individuals might find that they sink too deeply into a very soft mattress, which can lead to discomfort and improper support.ConclusionAfter thoroughly testing and analyzing the AS5, I can confidently say it’s an exceptional choice for those seeking a luxuriously soft sleep surface. With its innovative construction, cooling properties, and impressive performance across various criteria, the AS5 earns a strong 9 out of 10 overall rating.Where the AS5 particularly excels is in its suitability for side sleepers and those with joint pain. The ultra-soft surface allows for deep pressure relief at the hips and shoulders, promoting proper spinal alignment and reducing discomfort. Additionally, the mattress’s impressive motion isolation and edge support set it apart from many other soft mattresses on the market.However, it’s important to note that the AS5 may not be ideal for everyone. Stomach sleepers and some back sleepers might find it too soft for proper support. Additionally, its premium price point may be a consideration for budget-conscious shoppers.Despite these minor drawbacks, the Amerisleep AS5’s overall performance, quality of materials, and thoughtful design make it a top contender in the luxury mattress market. Backed by a generous sleep trial and warranty, it offers a low-risk opportunity to experience what might be the pinnacle of soft mattress comfort.Final Score TallyMattress FeatureTester's ScoreResponsiveness9 out of 10Motion Isolation9 out of 10Edge Support10 out of 10Cooling Ability10 out of 10Final Score9 out of 10About 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. 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