Untitled design 1

Disclosure: By clicking on the product links in this article, Mattress Nerd may receive a commission fee at no cost to you, the reader. Read full disclosure statement.

Amerisleep vs. Leesa Mattress Comparison

Too many foam mattresses to choose from? This comparison of the Amerisleep AS3 and the Leesa Original mattress covers everything you need to know to decide which is the best mattress for you.

Comparing Amerisleep & Leesa

This mattress comparison examines Leesa and Amerisleep’s best-sellers: the Amerisleep AS3 and the Leesa Original. The Leesa is a simply designed three-layer foam mattress with a soft feel that’s great for a variety of sleepers. The AS3 is available as all-foam or hybrid mattresses, each of which feels like a traditional memory foam mattress with a little more bounce.

Key Differences

  • The Leesa has a neutral, accommodating foam feel, and the AS3 has a responsive, gel memory foam feel. The Leesa’s denser foam layers may balance the sleeper’s body weight on top of the mattress and encourage pressure relief.
  • Both brands run promotions throughout the year, but the Leesa is consistently priced $300 to $400 lower than the Amerisleep AS3. Amerisleep’s higher cost can be attributed to the additional thickness level and extra features incorporated into the construction.
  • The AS3’s Celliant fabric cover is a standout feature when compared to Leesa’s polyester-blend cover. This Celliant material is designed to convert body heat into infrared energy and return it back to the sleeper for improved tissue oxygenation, blood flow and body temperature regulation.

Key Similarities

  • Both mattresses excel in providing conforming and pressure relief while maintaining an even surface for all sleep positions, needed in the best mattress for combination sleepers.
  • Neither bed sleeps noticeably hot nor cool, so they may not be the best choice for hot sleepers who need robust breathability or active cooling features.
  • Both models work for average-weight and lightweight sleepers in all sleeping positions, but neither is supportive enough for heavyweight body types. See our best mattress for heavy people guide for supportive mattresses that will protect the sleeper while providing pressure relief.
  • Both beds are virtually silent when pressure is applied and have excellent motion isolation, making them a great choice for sensitive sleepers and couples.

Amerisleep AS3

Who Should Buy this Mattress? 

  • Shoppers interested in the benefits of Celliant technology
  • People who like memory foam with a light bounce
  • Combination and side sleepers


Trial period

100 days


20 years



Who the Amerisleep AS3 is Best For 

  • Shoppers interested in the benefits of Celliant technology: The AS3 mattress models have a cover made with Celliant fabric designed to benefit athletes, regular exercisers and people with physically demanding professions. While there are no data-driven studies to prove the effects of Celliant, sleepers report better sleep and fewer aches and pains after sleeping on this material.
  • People who like memory foam with a light bounce: The Amerisleep AS3 isn’t as viscous and slow to respond as most all-foam mattresses; it offers good responsiveness to pressure, which is especially beneficial for combo sleepers who change positions.
  • Combination and side sleepers: The top comfort layer of the AS3 can protect pressure points as a best mattress for side sleepers, while the hybrid construction and bouncy movement can keep combination sleepers supported as they adjust positions.

Not Best For…

  • Heavyweight sleepers: Neither the hybrid nor the all-foam version of the AS3 is supportive enough for heavyweight individuals and couples.
  • People who want a traditional memory foam feel: If you enjoy the feel of traditional memory foam, which is slow to respond and sinks deeply underneath the body, you may find the AS3 to be too responsive.
  • People who sleep hot: The AS3 doesn’t offer adequate cooling features for most hot sleepers. The top layer of Bio-Pur foam tends to absorb heat in both models, so the bed tends to sleep warmer than beds built with intentional cooling measures.

Read our full Amerisleep AS3 mattress review to learn more! 


Who Should Buy this Mattress?

  • Shoppers on a tight budget
  • People who want to sleep “on” the mattress
  • Side sleepers looking for pressure point relief
leesa hero image


Trial period

100 days


10 years



Who the Leesa Mattress is Best For 

  • Shoppers on a tight budget: A Queen size Leesa costs roughly $1,000, but Leesa runs specials all the time, so you can usually find a Leesa mattress for less than $850 with coupons and promo codes. The retail price for a Queen size Amerisleep AS3 foam is roughly $1,400.
  • People who want to sleep “on” the mattress: Leesa is great for people who like a soft foam bed without the deep contouring of memory foam. The comfort foam layers in the Leesa give it a soft, body-hugging quality. This element makes it a great pick for back sleepers who want a neutral, comfortable foam bed. See our list of the best mattresses for back sleepers for other hybrid or innerspring options.
  • Side sleepers looking for pressure point relief: We saw great results in our pressure relief test on Leesa, meaning side sleepers who suffer from joint pain should be able to sleep soundly.

Not Best For…

  • Heavyweight sleepers: Like the Amerisleep, the Leesa is simply not tall, firm or supportive enough for heavyweight individuals and couples. The Leesa Hybrid mattress is a nice alternative if you are a heavyweight sleeper looking for additional support.
  • Hot Sleepers: Though Leesa has a few cooling infusions, it does not beat the airflow provided by a hybrid or innerspring mattress.

Read our full Leesa mattress review to learn more! 

Deciding Between Amerisleep & Leesa

Firmness / Feel

Both beds share a medium-firm firmness level, which helps each accommodate all sleeping positions for people who are lightweight or average weight. However, the beds feel noticeably different. That’s because the order of foam layers in the Leesa—the bed’s construction includes a layer of polyfoam on top of memory foam—gives the bed a neutral feel that’s plush yet doesn’t cradle the body deeply. 

The Amerisleep AS3 feels like a true memory foam bed, and sleepers will sink into the comfort layers when they lie down. When they get up, the AS3 will respond much faster than traditional memory foam, making it a good choice for shoppers who don’t want to feel stuck in the mattress.

Motion Isolation

Motion isolation is a factor you look for when determining the best mattresses for couples. Essentially, you don’t want their movements to transfer across the mattress and wake you up.

All-foam beds typically offer the best motion transfer properties, as foam absorbs movement better than other materials. You can expect to feel little to no movement on the AS3 foam and the Leesa Original. Even the AS3 Hybrid has surprisingly low motion transfer for a hybrid mattress.

Edge Support

You can test the edge support in your mattress by sitting along the perimeter of the bed to see how much it sinks. Still, edge support can be roughly predicted without this test by examining a bed’s style and the density of its edge materials. 

The AS3 Hybrid features coils that provide better edge-to-edge support than the Leesa in this category. The AS3 Foam and the Leesa Original will have significant sinkage at the edges, because neither has added features to encourage great edge support.

Pressure Relief 

A bed’s ability to create pressure relief for a sleeper depends on the sleeper’s body type. The AS3 and Leesa are best-suited to conform closely to lightweight and average-weight sleepers’ bodies, and both will provide a nice body-hugging cradle to prevent pressure points from developing. 

If we had to choose a “winner,” we’d say the Leesa takes this category by a hair: the top layer of foam in its construction is softer than the AS3’s top layer.

Spinal Alignment 

The ideal firmness and thickness for a mattress to encourage spinal alignment depends on a sleeper’s body weight and preferred sleeping position. Only lightweight and average-weight sleepers can safely achieve healthy spinal alignment on the AS3 and the Leesa, because neither mattress is supportive enough for heavyweight sleepers. 

Both mattresses work well for all three primary sleeping positions (back, side and stomach), offering a balance of cushioning and even support. Some heavier sleepers or stomach sleepers may find that the memory foam causes their hips to sink, which could lead to back pain. If back pain is a concern, see our picks for the best mattress for stomach sleepers– likely to keep the hips lifted and protect the spine while resting on the stomach.


We expect the Leesa Original and the all-foam version of the AS3 to be slightly less durable than the AS3 Hybrid. In general, foam beds are less durable than innerspring, hybrid, and latex models, which tend to feature thicker designs, sturdy coil cores, and other materials that enhance their longevity. Foam beds tend to break down quickly and therefore don’t last as long. 

Still, Amerisleep and Leesa each offer 10 years of full warranty coverage, and Amerisleep tacks on an extra 10 years of prorated protection for the bed.


Foam mattresses trap heat more than other models, and the Leesa and AS3 Foam are no exception. Even with the Celliant cover and the incorporation of a breathable coil core, the AS3 Hybrid also traps heat, so we wouldn’t recommend either of these options for extra hot sleepers. The best mattress for hot sleepers is more likely to be a hybrid mattress with actively cooling materials or an innerspring mattress that prevents any heat entrapment.

Amerisleep AS3 Construction

Cover Celliant Blend cover Celliant Blend Cover
Comfort Layer  3” Memory Foam 3” Memory Foam
Transitional Layer 2” Polyfoam 2” Polyfoam
Support Layer 7” High-Density Polyfoam 7” Zoned, Pocketed Coils
Mattress Thickness  12″ 12″

The Amerisleep AS3 is a high-quality mattress that’s available in all-foam and hybrid versions. The foam option combines pressure-relieving memory foam with supportive base foams, and the hybrid version combines the same comfort foams with a pocketed coil support core. Both options measure 12” tall and have a medium firmness setting.

The cover of the all-foam AS3 and AS3 Hybrid features Celliant fibers, which convert body heat into infrared energy and transmit it back for faster recovery. The beds also share the same comfort and transitional layers, which are 3″ of Bio-Pur foam (a proprietary open-cell memory foam) and 2″ of high-density polyfoam. The Bio-Pur memory foam has a medium feel that conforms to the body, but is more responsive than traditional memory foam.

The all-foam AS3’s bio-core is 7″ of high-density polyfoam, which helps prevent the mattress from sagging. The hybrid AS3 features pocketed coils encased in high-density foam. The coils are also zoned, with thicker coils supporting the lower back and hips.

Leesa Mattress Construction

Cover Polyester and Lycra Spandex Blend
Comfort Layer  Polyester and Lycra Spandex Blend
Transitional Layer N/A
Support Layer 6” High-Density Polyfoam
Mattress Thickness  10”

The Leesa mattress is encased in a polyester and Lycra spandex blend cover that’s soft and somewhat breathable. In the comfort portion of the mattress, high-density polyfoam is layered over low-density memory foam, both of which work together to give the bed noticeable body-conforming capabilities without too much of a memory foam feel

The support core is 6″ of high-density polyfoam. This provides a base for the softer layers of the bed. The mattress measures 10”, which is average for an all-foam bed.

Sizing & Price Comparisons 

Mattress Size  Amerisleep AS3 Foam Price Amerisleep AS3 Hybrid Price Leesa Price
Twin $1,099 $1,299 $799
Twin XL $1,149 $1,249 $849
Full $1,249 $1,449 $999
Queen $1,399 $1,599 $1,099
King $1,699 $1,899 $1,299
Cal King $1,699 $1,899 $1,299
Split King $2,098 $2,698 N/A

For great deals on Leesa beds, see our Leesa coupons page. See our Amerisleep Mattress Coupons for the best price on your new mattress.

Shipping and Returns for Amerisleep & Leesa

Amerisleep AS3

The Amerisleep AS3 is delivered rolled and compressed as a bed-in-a-box, and shipping is free to the contiguous U.S. Amerisleep can also ship to Alaska, Hawaii, Canada, and Mexico. Deliveries are made through FedEx, and most mattresses arrive within three to five business days.

The Amerisleep return policy states that you’ll have 100 nights to test the AS3 at home, and Amerisleep requires you to sleep on the bed for at least 30 nights prior to initiating a return. You can exchange the mattress for a different model or return it for a full refund during the sleep trial period.

If you decide to keep the AS3, it’s backed by Amerisleep’s 20-year warranty. This coverage is partially prorated: During the first 10 years, Amerisleep will cover the cost of replacement or repair for issues covered by the warranty. During the last 10 years, you’ll have to pay 50 percent of the original mattress price to replace a defective bed.


The Leesa Original ships as a bed-in-a-box to the U.S. and Canada via UPS ground shipping. Customers in all 50 states receive free shipping, and mattresses are typically delivered within five business days after the bed ships.

Leesa offers a 100-night trial for the Original if the bed was purchased through Leesa.com, Amazon, West Elm, or other select retailers. The trial includes a 30-night break-in period, so you can only return your mattress for a full refund once you’ve tested it for at least 30 nights.

If you decide to keep your Leesa Original, Leesa offers a 10-year warranty that’s entirely non-prorated. Leesa will repair or replace mattresses with defects, but customers are responsible for all shopping and handling costs.

More Amerisleep Mattresses

Amerisleep AS1

One of Amerisleep’s firmer options, this bed is an excellent choice for strict stomach sleepers and back sleepers. The top layer offers gentle-but-firm support for the hips and shoulders to keep the spine properly aligned.

Amerisleep AS1 Mattress

See our full Amerisleep AS1 Mattress Review to learn more.

Amerisleep AS2

This mattress comes in hybrid and all-foam styles and is best for stomach and back sleepers who need targeted pain relief.

amerisleep as2

See our full Amerisleep AS2 Mattress Review to learn more.

Amerisleep AS4

This Medium-Soft mattress is tailored for side sleepers and features extra cushioning at the hips and shoulders. It’s also one of Amerisleep’s more expensive options.

See our full Amerisleep AS4 Mattress Review to learn more.

Amerisleep AS5

The AS5 is more expensive than the other models and provides a balance of comfort and support for side sleepers and combination sleepers. The Bio-Pur foam in its construction bounces back in seconds and prevents heat buildup.

AS5 mattress

Read our full Amerisleep AS5 Mattress Review to learn more. For all the details, check out our Amerisleep Mattress Comparison page.

More Leesa Mattresses

Leesa Hybrid

This hybrid mattress is 11” tall and has a medium-firm (6.5/10) firmness level. It has comfort layers similar to the Original but has a pocketed coil support core instead of a high-density foam base. As a result, it’s firmer and more responsive than the Leesa Original.

Leesa Hybrid Mattress

See our Leesa Hybrid Mattress Review to learn more.

Leesa Legend

The Legend, a 12” hybrid mattress with a medium-firm (7/10) firmness level, is Leesa’s newest model. It sleeps cooler than the Leesa Original and is best for average-weight and heavyweight sleepers who tend to sleep hot.

Leesa Legend Mattress

See our Leesa Legend Mattress Review to learn more.

Leesa Studio

The Studio by Leesa mattress is a super-affordable all-foam bed that offers a simple construction for the budget-conscious shopper.

Studio by Leesa Lifestyle

See our Leesa Studio Mattress Review to learn more.

Our Final Take

Both the Amerisleep and Leesa are great beds, but if you want a mattress with a memory foam feel, we’d say you should go with Amerisleep. If you like a neutral foam feel without much sinking, you’ll enjoy the Leesa. The Leesa is also the more affordable of the two beds, making it the obvious choice for shoppers on a tight budget. That being said, Amerisleep offers five different memory foam and hybrid models, so even if the AS3 isn’t exactly right for you, there are more options to choose from if you go with the Amerisleep brand.