Amerisleep AS3 Mattress Review

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Amerisleep AS4 Testing Out The Edge Support
We evaluate mattresses across 8 key categories, providing an overall rating for easy comparison. For more details on our review process, read about how we test by clicking the question mark below.


Pressure Relief
Motion Isolation
Edge Support
Ease of Movement

Our Verdict

The Amerisleep AS3 stands out as the ‘Goldilocks’ of mattresses, offering an impeccable balance that caters to a diverse range of sleepers. Its versatility makes it an excellent choice for side and back sleepers, couples seeking harmonious sleep, and individuals who prioritize eco-consciousness in their mattress choice.

  • Comfortable and supportive, ideal for side/back sleepers.
  • Ideal for couples with differing firmness preferences.
  • Eco-friendly with plant-based, certiPUR-US certified foams.


  • May not offer sufficient support for stomach sleepers.
  • Higher price may not fit budget-conscious shoppers.
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Product Details

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Memory Foam

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Free Standard

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Embarking on a quest to find the perfect mattress can be an overwhelming journey, but Amerisleep could be the ultimate destination. Imagine Amerisleep as the ‘Goldilocks’ of mattresses, where there’s a perfect fit for everyone. Whether you crave the cloud-like softness of foam, the sturdy support of a hybrid, or the eco-friendly comfort of an organic mattress, Amerisleep has your dream bed waiting. From the ultra-plush AS5 to the very firm AS1, they’ve meticulously crafted a sleep solution that caters to your unique needs.

This review looks at Amerisleep’s most popular model: the AS3. As a husband and wife team with a shared passion for quality sleep and innovation, we had the opportunity to test the Amerisleep AS3 personally. We’ll share our experience and cover details like the mattress’s construction, firmness, support, and unique features.

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Firmness & Feel of the Amerisleep AS3

The AS3 mattress is an excellent choice for those who want a blend of contouring and support. We rated it a 6.0 out of 10 on the firmness scale, which puts it in the medium range, making it ideal for most body types and sleep preferences. The AS3 features zoned construction, which provides targeted pressure relief and support, resulting in a comfortable and restful sleep. Let’s look at how it feels based on your preferred sleeping position!

Firmness Scale 1-10 highlights a 6.0 or medium firmness.

Is The AS3 Suitable For Side Sleepers?

As a side sleeper, I struggle with sleep-induced pain in my hips and shoulders, so finding a mattress that can effectively ease pain through these stubborn pressure points is essential. I was impressed with how well the AS3 delivered the relief I needed without compromising support.

Still, some side sleepers might lean towards an even plusher feel. For those folks, Amerisleep has you covered with the  AS5, specially designed for side sleepers who want that extra touch of softness. Nonetheless, the AS3’s “medium” feel is a crowd-pleaser, catering to a wide range of sleep styles, including couples with different firmness level preferences.

Is The AS3 Suitable For Back Sleepers?

If you’re a back sleeper, you’re in for a treat! The ideal mattress for back sleepers not only keeps your spine aligned but also offers optimal cushioning for a comfortable night’s rest.

The Amerisleep AS3 mattress is an excellent choice for back sleepers, thanks to its perfect balance between comfort and support. Its medium firmness gently embraces your body, cushioning your joints while keeping your spine in a healthy alignment. You’ll feel this gentle embrace as soon as you lay down, especially in your lower back. Unlike other mattresses, it doesn’t sag or hammock, which can cause your body to get out of alignment and lead to discomfort.

Is The AS3 Suitable For Stomach Sleepers?

The AS3, with its medium firmness, might not be optimal for those who prefer to sleep prone. Stomach sleepers need a firmer mattress to avoid spinal misalignments that could cause discomfort or back pain.

If you’re a stomach sleeper, consider one of Amerisleep’s firmer options for that extra dose of support. The AS1 (firm) and the AS2 (medium-firm) have been designed specifically for back and stomach sleepers.

Related: Amerisleep Mattress Reviews | Buying Guide

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Putting the Amerisleep AS3 to the Test


Amerisleep utilizes innovative technologies to promote a cooler, more breathable sleep experience. Unlike traditional memory foam mattresses notorious for heat buildup, Amerisleep’s secret lies in Bio-Pur, an open-cell, plant-based foam. This material delivers the sought-after pressure relief of memory foam while ensuring a significantly cooler night’s sleep.

Additionally, Amerisleep’s mattress cover is designed to draw heat away from your body and convert it to far infrared energy. This makes for a cooler sleep surface, improves circulation, supports quicker muscle recovery, and improves sleep quality.

As someone who tends to sleep hot, I understand the importance of temperature regulation for an uninterrupted night’s rest. The Amerisleep AS3 has proven to be one of the coolest all-foam mattresses I’ve tested, ensuring I sleep soundly and undisturbed.

Motion Isolation

Motion isolation is vital in a mattress because it minimizes the transfer of movement from one side of the bed to the other. This means that when your partner shifts or gets in and out of bed, their movements won’t disturb you. It’s particularly important for couples who share a bed, ensuring that both individuals can enjoy uninterrupted, restful sleep without being disturbed by each other’s motions during the night.

Memory foam mattresses tend to perform well in this category, and the AS3 was no exception. My husband and I experienced minimal motion transfer, allowing us to sleep through the night without disturbance. This indicates it could be a great choice for couples!

Edge Support

Edge support, or lack thereof, can significantly affect your overall comfort. Strong edge support ensures that you can utilize the full surface area of your mattress, making it feel more spacious. Conversely, a lack of edge support can make your mattress seem smaller and limit your sleeping space.

During our testing, we found that the Amerisleep AS3 demonstrated reliable edge support when lying near the edge. While we experienced some slight compression, it was minimal, and we didn’t feel at risk of rolling off the bed. However, we observed more noticeable compression when we tried sitting on the edge.

This aspect of edge support is particularly crucial if you have mobility concerns and rely on sturdy edge support for ease of getting in and out of bed. It’s worth considering how edge support aligns with your needs to ensure a comfortable and accessible sleep experience.

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Construction: Inside The Amerisleep AS3

Restore Mattress Cover -

This soft, breathable mattress cover is made with special fibers that convert body heat into infrared energy, promoting better sleep and health.

Comfort Layer -

This layer is made with Bio-Pur, an open-cell foam that offers a breathable, cooler sleep experience. This plant-based foam layer provides excellent contouring and cushioning while bouncing back into shape quickly to reduce that “stuck-in-the-mud” feeling often associated with traditional memory foam mattresses.

Transition Layer -

The AS3 offers targeted pressure relief for your shoulders and hips while supporting your head, back, and legs, all thanks to the zoned HIVE transition layer.

Base Layer -

The base layer of the mattress is made of Bio-Core, providing a strong foundation for the mattress and ensuring its durability over time. This layer is specifically designed to prevent sagging and indentations, which could lead to back pain and other sleep-related issues. Its sturdy support system ensures a comfortable and pain-free sleep experience.

Amerisleep Purchase Details

Sleep Trial

Amerisleep offers a 100-night trial period. To be eligible for a refund, you must try the mattress for at least 30 days, allowing ample time to adjust to it. If it’s not the perfect fit, Amerisleep arranges a hassle-free pick up and ensures the mattress finds a new home through charity donation or recycling, all at no cost to you.


A 20-year warranty backs Amerisleep mattresses. Any defects that occur within the first ten years, including indentations greater than 1 inch, are covered by comprehensive repair or replacement. After the initial ten years, any structural or workmanship issues that arise are also covered but on a prorated basis.

Shipping & Delivery

The Amerisleep AS3 is a bed-in-a-box mattress shipped directly to your doorstep via FedEx. Shipping is FREE within the continental United States.

Amerisleep AS3 Prices & Bed Sizes



Amerisleep AS3 Price


38″ x 74″ x 12″


Twin XL

38″ x 80″ x 12″



54″ x 75″ x 12″



60″ x 80″ x 12″



76″ x 80″ x 12″


California King

72″ x 84″ x 12″


Split King

38″ x 80″ x 12″ x 2


*Prices may be subject to change.

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Is The Amerisleep AS3 Mattress Right For You?

After putting the Amerisleep AS3 to the test, I’m genuinely impressed! It strikes a fantastic balance between comfort and support, addressing the diverse needs of couples like my husband and me. The AS3 offers the support he seeks while delivering the pressure relief I require for a good night’s sleep. It’s a top choice for couples with differing preferences!

While it’s not the absolute coolest mattress I’ve reviewed, it’s certainly one of the coolest all-foam options. And as an eco-conscious shopper, I appreciate Amerisleep’s commitment to health and safety.

However, —it may not suit everyone. Stomach sleepers might not find the support they need here. Plus, it’s a bit pricey, but given its eco-friendly design, it’s a justifiable investment.

How Does the Amerisleep AS3 Compare To Other Mattresses?

Amerisleep vs Nectar

  • Both are all-foam mattresses. Nectar is a memory foam mattress, while the Amerisleep AS3 uses Bio-Pur, a memory foam alternative.
  • Nectar is significantly less expensive than the Amerisleep AS3, making it a better fit for budget-conscious shoppers.
  • Nectar has a classic, slow-moving memory foam feel. The Amerisleep AS3 is more responsive, returning to shape faster than the Nectar mattress.
  • The Amerisleep AS3 sleeps cooler than the Nectar mattress.
Learn more: Nectar Mattress Review

Amerisleep vs Saatva

  • Saatva is a hybrid mattress featuring foam and coils. It’s available in 3 different firmness options.
  • Saatva is slightly more expensive than the Amerisleep AS3.
  • The Amerisleep AS3 also has a hybrid option.
  • Saatva sleeps cooler than the Amerisleep AS3.

Learn more: Saatva Mattress Review

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