Amerisleep AS3 review

Last Updated: April, 2023

Please Note: This Post Contains Affiliate Links

Are you looking for a new memory foam mattress with quality construction, well-rounded performance, and affordable pricing? The Amerisleep AS3 is a wise choice. The AS3 mattress is one of the five offerings within Amerisleep's long line of mattresses. 

The Amerisleep company has established its solid reputation around environmentally sustainable Bio-Pur foam, which is more advanced than ordinary memory foam. The mattresses are numbered AS1, AS2, AS3, AS4, and AS5, and they all have proprietary Bio-pur foam in their construction. 

Like most models produced by Amerisleep, the AS3 is available in both hybrid and memory foam versions. It's crucial you understand how components in each of these mattresses guarantee you a good night's sleep. In this Amerisleep AS3 mattress review, we'll take a closer look at both versions of the AS3 to help you choose the right pick per your preferences. Let's jump right into it.

Amerisleep AS3 Hybrid Mattress

Amerisleep AS3 mattress review - hybrid mattress

The proprietary Bio-Pur foam layer and the cool-to-the-touch breathable cover makes the AS3 hybrid great for hot summers. Its pocketed coils and memory foam ensures sleepers experience an unmatched balance of comfort and support.

What We Like

  • Refresh Cooling Cover helps hot sleepers stay cool during hot summers
  • Bio-Pur foam is non-renewable and environmentally friendly
  • Combination of memory foam and innerspring makes the mattress very responsive
  • Double-density coils along its perimeter give it excellent edge support.

What We Don't Like

  • Firmness scale isn't ideal for heavy stomach sleepers

Amerisleep is running a sale on their mattresses, active today May 23, 2024!

AS3 Hybrid Mattress Review Breakdown

Among the most popular mattresses in the Amerisleep Line is the AS3 Hybrid Mattress. The bed bears a medium-firm feel, primarily ideal for side sleepers. Unlike traditional memory foam, this mattress' proprietary Bio-Pur foam is environmentally friendly and excellently cooling. 

The AS3 hybrid is an award-winning bed and is quite popular among various sleepers. Let's look at how its construction and design influence your sleep experience.

Design and Construction

The Zoma Sports Mattress starts with a stretchy polyester-spandex cover made of a breathable mesh-like material to help hot sleepers sleep cool at night. Zoma recommends spot-cleaning your cover to remove stains and keep it fresh and clean. 

Amerisleep AS3 mattress review - hybrid construction and design

Amerisleep  is running a sale on their mattresses, active today May 23, 2024!

Like most hybrid mattresses, the AS3 hybrid basically comprises a fusion of memory foam and pocketed coils. Below is a comprehensive outline detailing what this hybrid mattress is made of, layer to layer.

The Mattress Cover

At the very top sits the Refresh Cooling Cover. The cover is scientifically engineered to prevent heat retention by converting body heat to infrared energy. 

Research shows this infrared energy is vital for muscle recovery, blood circulation, and sleep quality. More importantly, the Refresh Cooling Cover has a zipper—a feature that makes it easy to clean accidental spills.

Comfort Layer

The next layer beneath the cover is the 3" comfort layer. The layer's construction comprises Amerisleep's proprietary Bio Pur foam. 

This memory foam blends eco-friendly materials and polyurethane foam designed to keep hot sleepers cooler than traditional memory foam. The layer is quite responsive despite its excellent touch of pressure relief.

Support Layer

Amerisleep AS3 mattress review - hybrid mattress

Underneath the comfort layer sits the support layer. It comprises zoned pocketed coils that provide overall structural support and bounce. The zoning also offers extra support around your lumbar region—courtesy of the extra firmness on the mid-section of the mattress surface. The mattress features double-density coils on the edge which help beef up the edge support. 

Base Layer

Made from high-density foam is the base layer. The layer acts as the foundational foam and is responsible for maintaining the structural integrity of the mattress. It also helps boost the mattress' durability.

Mattress Performance 

As an award-winning mattress, the AS3 hybrid has undergone numerous tests to help assess and ascertain its performance. Below are some of the findings to help you decide properly.

Temperature Regulation 

The Refresh Cooling Cover, in conjunction with the open-cell structure within the Bio-Pur foam on the comfort layer, makes this mattress an incredible choice for shoppers who often sleep hot. 

These two features shield sleepers against night sweats while keeping them cool throughout hot nights. Like any innerspring mattress, the coils at its core provide more room for efficient airflow throughout the mattress surface, which helps prevent heat retention.

Pressure Relief

The AS3 hybrid has an industry-standard firmness scale of 6.5/10, which marks it as a medium firm mattress. This, combined with a blend of the proprietary Bio-pur foam and the pocketed coils, produce excellent pressure relief ideal for alleviating aches and pains.

Aside from targeted relief on painful pressure points, the Bio-Pur foam is an excellent contouring memory foam—designed to be more responsive than ordinary memory foam to provide deep cradling comfort along the body curves. Also, the targeted zoned support helps prevent excessive sinkage while keeping your spine aligned properly.

Motion Isolation

Typically, memory foam beds are known to hold excellent motion isolation. And thanks to the AS3 hybrid's Bio Pur comfort layer, it is an ideal pick for buyers with spouses or co-sleepers. 

With the minimal motion transfer between you and your partner, you don't have to worry about disturbances generated by your partner's tossing and turning. Also, if you or a loved one has mobility issues or seeking a less sinky surface with excellent bounce and support, the AS3 hybrid is the right pick.

Edge Support

Though overlooked by some buyers, edge support is a crucial factor when selecting a suitable mattress. Unlike most hybrid mattresses on the market, the AS3 hybrid employs a sophisticated design around the edges, granting it excellent edge support. 

The foam encasement surrounding the coils along the edges makes it secure enough for occasional sitting. More importantly, the mattress' sturdy edge support ensures you can sleep comfortably at the edge without falling off the bed.


The AS3 may not be as thick as most hybrid mattresses, but it sure is quite durable, thanks to its strong pocketed coils. Moreover, it has an average lifespan of 10 years, and with great care, it can last a little over a decade.

One way to make this mattress last longer is to keep the weight limit per sleeper at 300 pounds. Consider switching sleeping spots with your partner every few months to prevent uneven premature sagging. But if you're a single sleeper, change your sleeping spots regularly.

Off Gassing

Like most sleep products, you'll notice some slight off-gassing with this mattress. Generally, it should dissipate between 24 and 48 hours. Though off-gassing from some mattresses may cause respiratory problems, the AS3 hybrid mattress differs. Thanks to its plant-based Bio-pur foam, the odor is very low in volatile organic compounds (VOCs).


With the pocketed coils and memory foam in its construction profile, it doesn't make any noise. Overall, the Bio-Pur memory foam basically dampens any noise to ensure you sleep comfortably undisturbed.

Types of Sleepers and Various Sleeping Positions

Sleep position is critical when seeking a mattress that will grant you profound comfort and support. Since the AS3 hybrid is designed to target all sleeping positions, below is an insight to make your mattress search smoother.

Side Sleepers

As a medium firm mattress, the AS3 Hybrid is ideal for light and average-weight side sleepers. However, this mattress may not be ideal for strict side sleepers, as they may experience discomforting pressure around the shoulders and hips. If you often sleep on your side, a slightly softer alternative such as the AS4 or the AS5 should do the trick. Like strict side sleepers, heavyweight ones (over 230lbs) will experience pressure build on their shoulders and hips. So this hybrid bed isn't suitable for them either.

Stomach Sleepers

The AS3 hybrid’s firm midsection offers enough support to light and average weight stomach sleepers. The mid-section also prevents them from sinking excessively into the surface. 

Only lightweight stomach sleepers (less than 130 lbs) will benefit significantly from this Amerisleep model than other stomach sleepers. Heavyweight buyers accustomed to stomach sleeping should seek suitable firmer mattress alternatives in the Amerisleep line.

Back Sleepers 

Back sleepers will enjoy this hybrid bed's outstanding balance of support and comfort. As your hips sink into the Bio-Pur foam comfort layer, you'll experience profound body contouring as the zoning on the coils provide more support on your lumbar region for proper spinal alignment. 

Unlike heavyweight side sleepers, heavyweight back sleepers can be sure of excellent spinal support, courtesy of the zoning coils. Lightweight back sleepers will also experience adequate pressure relief.

Combination Sleepers 

With the ample support it offers back sleepers and pressure relief to side sleepers, this mattress is an excellent option for combination sleepers. So as a combo sleeper in constant need to transition from one position to the other with ease, the AS3's bounce and responsiveness will grant you just that.

Amerisleep AS3 Memory Foam Mattress

amerisleep AS3 mattress review - memory foam

Amerisleep  is running a sale on their mattresses, active today May 23, 2024!

The AS3 memory foam is neither soft nor firm but right in the middle of the medium firm spot, appealing to most sleepers. Its outstanding balance of softness and support virtually supports any sleeping position.

What We Like

  • Bio-Pur foam comprises wider cells than traditional memory foam for maximum breathability
  • Bio-Core layer offers lasting support, structural integrity, and general durability
  • HIVE transition layer cushions the shoulders while providing extra support on the lumbar region.

What We Don't Like

  • Unfit for buyers who fancy bouncy mattresses

AS3 Memory Foam Mattress Review Breakdown

Another popular Amerisleep mattress is the AS3 memory foam model. This is an all foam bed fitted with cutting-edge features designed to target a variety of sleepers. Let's find out if this all-foam mattress' design matches your desired comfort needs.

Amerisleep AS3 mattress review - memory foam construction and design

Amerisleep is running a sale on their mattresses, active today May 23, 2024!

Construction and Design

It's clear from the name that this versatile mattress is primarily made of memory foam. Now that you have an idea of what this bed is made of, let's take a look under the hood and assess each layer.

Mattress Cover

The AS3 memory foam mattress has a highly sophisticated Refresh Cooling Cover. The breathable cover is fitted with technology that transforms body heat to infrared, keeping you from sleeping hot during summer. Like the AS3 hybrid, its cover also protects your mattress against accidental spills.

Comfort layer

Unlike the AS3 hybrid, this mattress' 5" comfort layer comprises a 3" open cell Bio-Pur foam top layer with the 2" HIVE Transition layer immediately beneath it. 

While the 3" top layer offers responsiveness and pressure relief, the 2" transition layer has zoning, creating a slight firmness difference across the surface. That way, it is softer around the shoulders and the hips to relieve pressure points, and firmer around the feet, back, and head to provide more support.

As previously mentioned, the open-cell Bio-Pur foam layer consists of plant-based materials and is low in volatile organic compounds. More importantly, Bio-Pur foam is CertiPUR-US certified, so it's eco-friendly. 

Support Layer

amerisleep AS3 mattress review - memory foam support

Amerisleep  is running a sale on their mattresses, active today May 23, 2024!

The base layer of this all foam mattress is Bio Core foam. This 7-inch thick layer bears solid resilience since it's designed to provide structural support to the entire mattress and make it durable. Additionally, unlike the AS3 hybrid base layer, Bio-Core offers lasting support for your back.

Mattress Performance

Like the AS3 hybrid, this all-foam Amerisleep bed has also undergone numerous tests. Below are our findings regarding pressure relief, edge support motion isolation, noise, off-gassing and sleeping position.

Pressure Relief

amerisleep AS3 mattress review - memory foam pressure relief

On the firmness feel area, this version of the AS3 mattress is also on the medium firm side like its counterpart. The medium firmness offers sleepers profound pressure relief and gentle body contouring. When side sleeping, on this mattress, the Bio-Pur foam layer cushions your joints while alleviating pressure points around your shoulders and hips.

Temperature Regulation

Generally, most foam mattresses are known to retain heat. And since this AS3 mattress is made of proprietary Bio-Pur foam, it sleeps much cooler. Aside from the open cell Bio-Pur foam, its breathable cover helps boost cooling while protecting you from night sweats. 

Motion Isolation

Memory foam mattresses are reputable for providing excellent motion isolation; the same is true for this AS3 model. With minimal motion transfer between co-sleepers or couples, you can rest assured of less disturbance when sleeping at night. Because of its top-class motion isolation, this mattress is a great choice for co-sleepers with different sleeping schedules and light sleepers.

Edge Support 

Like a few high-quality all foam mattresses on the market, this AS3 mattress has solid edge support. This is thanks to its durable foams, which keep the mattress edge from losing shape and strength. 

The edge is sturdy enough for sleeping and occasional sitting. Though not solid as the AS3 Hybrid, it is much better than you would expect from a memory foam mattress.


Like a typical all foam mattress, the AS3 Memory Foam doesn't produce any noise. The memory foam construction completely absorbs even the minimal vibrations from tossing and turning on the surface.


After unpacking this Amerisleep mattress, you'll notice slight off-gassing. This shouldn't be alarming since the gas is pretty low in VOCs- meaning. Generally, the gas will take a few days to dissipate entirely.

Sleeping Position and Types of Sleepers

Let's see how different positions affect your sleep quality and overall comfort on this Amerisleep Mattress model.

Side Sleepers

Thanks to its supportive polyfoam and the balanced foam feel of its plush memory foam, this mattress is a great pick for side sleepers. The mattress offers lightweight side sleepers enough sinkage around the shoulders and the hips, which helps keep their spine properly aligned. 

As an average-weight side sleeper, you should experience excellent sleep comfort—courtesy of the cushioning it provides around your curves. Heavyweight side sleepers are better off settling for the AS5. It has many layers, providing these sleepers with profound pressure relief and nice sinkage.

Back Sleepers

The blend of its reliable support and cushiony comfort in conjunction with the medium firmness makes it great for back sleepers. Not only does this AS3 Mattress offer lightweight back sleepers profound support but also a nice hug for a cozy sleep. 

The mattress offers balanced support and comfort to average weight back sleepers. However, those with back pain may find this mattress less comfortable since such pain requires localized support. 

Note: this mattress isn't suitable for back sleepers weighing over 230 lbs. If you are one, consider going for the AS4, which has many layers that help prevent you from sinking deeply in the middle of the surface.

Stomach Sleepers

Plush memory foam mattresses tend to allow the hips of stomach sleepers to dip excessively on the surface, which strains their lower backs. However, the firmness level of this Amerisleep AS3 Mattress is ideal for lightweight stomach sleepers. 

Stomach sleepers require firmer mattresses to keep their spine properly aligned and maintain good body posture. Unfortunately, this Amerisleep mattress is too soft to grant average and heavyweight stomach sleepers these two aspects. Instead, they should choose firmer alternatives corresponding to their body weight.

Combination Sleepers

Compared to ordinary sleepers, combo sleepers toss and turn a lot when changing sleep positions. Such sleepers need a mattress that adapts to their movements quickly. And thanks to this mattress' responsiveness, it is an excellent pick for these sleepers. It may take a while to become comfortable in a new position on this bed, but it's worth the investment.

Sleep Trial, Warranty, and Shipping Returns

Sleep Trial

Amerisleep mattresses come with a 100-day risk-free sleep trial. Like other mattresses with sleep trials, the trial begins the day you receive the mattress. Generally, the trial period enables your body to adjust to the new mattress and help you decide if it's the right fit for your comfort needs. If not, you are to return it within this period. 


Like other Amerisleep mattresses, each AS3 mattress comes with a 20-year warranty. However, keep in mind that Amerisleep offers free mattress replacement for the first 10 years if it incurs a sagging exceeding 0.75" or any other defect. After the first 10 years are over, you'll be charged partially for any replacement. 

Shipping and Returns

The AS3 hybrid and memory foam mattresses ship for free within the contiguous U.S. Expect your mattress to arrive at your doorstep after 2-7 business days.

Should You Pick the AS3 Hybrid or the Memory Foam Version?

The AS3 hybrid is a great pick for shoppers who'd prefer a bouncy and more responsive mattress to the all foam, non-bouncy AS3 Memory Foam. Though not perfect, the AS3 has quite decent edge support. But due to the solid reinforcement along the edges of the AS3 Hybrid, the hybrid model remains a great choice for buyers seeking mattresses with solid edge support.

The AS3 hybrid offers a great conforming feel as its pocketed coils enhance the bounce and responsiveness—giving you a taste of both worlds of memory foam and innerspring mattresses. Though the AS3 all-foam lets you enjoy the memory foam side only, it is still a great option for shoppers who love the cradling comfort of memory foam mattresses.

Generally, both mattresses come from a reputable company. So, each model will grant you excellent sleep quality depending on the features and the comfort needs you are after. 

Closing Thoughts

Both versions of the AS3 mattress can suit various types of sleepers, thanks to their reliable exquisite support and generous cradling comfort. While the AS3 memory foam is designed to provide a balanced foam feel to memory foam lovers, the AS3 Hybrid's design guarantees you responsiveness and bounce courtesy of the pocketed coils. Overall these mattresses are super durable and come with extensive warranties of up to two decades - which make your purchase worth the investment.

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