Starting at $1149  $949
Available in 7 sizes
MEDIUM FEEL Profile height: 12-inch

Risk-free, 100-night trial

20-year warranty

Free shipping & returns

Made in USA


Why you'll love it

The AS3 is our best-selling mattress. It’s tailored to adapt to most body types and sleep styles. Its perfect “medium” feel uses an even mix of comfort and support to relieve pain-causing pressure points and support healthy sleeping positions.

Enjoy weightless, cooling sleep with the AS3 Hybrid. We combine sleep-promoting foam layers with bouncy pocketed coils to cradle your body and keep you lifted in healthy alignment.

  • Experience cooling comfort with our plant-based Bio-Pur® memory foam
  • Maximize airflow and targeted support with our exclusive HIVE® technology
  • Balanced comfort and support perfect for all sleeping styles
  • Experience cooling comfort with our plant-based Bio-Pur® memory foam
  • Isolate motion transfer and increase comfort with our pocketed coils and firm edge support
  • Balanced comfort and support perfect for all sleeping styles
  • Free, no contact fast shipping
  • 100-night, risk-free sleep trial
  • Easy and free returns
  • 20-year warranty
  • Mattress made in the USA
  • Free, no contact fast shipping
  • 100-night, risk-free sleep trial
  • Easy and free returns
  • 20-year warranty
  • Mattress made in the USA
Save $300
  • Twin (38" x 74") $1449
  • Twin XL (38" x 80") $1499
  • Full (54" x 75") $1649
  • King (76" x 80") $1999
  • Queen (60" x 80") $1699
  • California King (72" x 84") $1999
  • Split King (38" x 80" - 2) $2698
AS3 All Foam
AS3h Hybrid (Foam + Coils)
Amerisleep foundation
Amerisleep Platform Bed

Perfectly support your mattress

+ $275
$1699 $1189.3 with promo
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Better sleep through better design

Sleep Cooler

Sleep Cooler

Comfort You Will Love

Comfort You Will Love

Tested to Last

Designed to Enhance Sleep

More Support, Deeper Sleep

Alleviates Pressure Points

Eco-Friendly Production

Eco-Friendly Production

Stays cool all night

Our plant-based Bio-Pur® material keeps you cool all night. It features an open-cell design that allows more air to escape than traditional foam.

Moon icon

Open-cell design wicks away warm air

Wind icon

More breathable than traditional foam

Experience Bio-Pur®:
Eco-Friendly, Cooler Memory Foam

Bio-Pur® is the perfect answer to a better bed. Available in every Amerisleep mattress, we engineered Bio-Pur® to deliver cooling comfort, responsive support, and healthier sleep.

Memory foam lovers say Bio-Pur® is a huge upgrade, while critics admit it solves all the problems of traditional memory foam. Plus, since our beginnings in 2009, we've proudly manufactured Bio-Pur® in the USA.

Bio-Pur® vs Traditional Memory Foam

Breathable & Cooling

Bio-Pur®'s large, open-cell structure has a few distinct advantages:

  • Allows air to flow freely
  • Prevents heat build-up
  • Perfect for hot sleepers

Responsive & Supportive

Unlike traditional memory foam, Bio-Pur® has a rapid response time that:

  • Relieves painful pressure points
  • Prevents heat build-up
  • Bounces back in just seconds

Eco-Friendly Materials

Featuring renewable plant-based oils, Bio-Pur® helps us:

  • Minimize use of non-renewable resources
  • Prevents heat build-up
  • Produce products that are better for you and the planet

A Healthier Sleep

The surface you sleep on is important. That’s why Bio-Pur® is:

  • CertiPUR-US® certified & low in VOCs
  • Resistant to dust mites, mold, and mildew & made without harsh chemicals

Traditional memory foams miss the mark when it comes to cooling and responsiveness. Amerisleep’s proprietary Bio-Pur® memory foam is an eco-friendly alternative that blends contouring comfort with buoyant support and superior breathability to help you get your best night’s sleep yet.

Our plant-based Bio-Pur® is significantly more breathable and responsive than traditional memory foam. It snaps back to its original shape in seconds, so it’ll never cause you to uncomfortably sink, and it’s significantly more porous and airy, so you won’t have to worry about night sweats. Even better? Bio-Pur® contains a fraction of the petrochemicals used in other memory foams, so it’s less likely to off-gas and is completely free of harmful substances.

That’s why in over 15,000 reviews, our mattresses rate 4.7 out of 5 stars and why 98% of customers would recommend us to a friend.

See why our customers love Bio-Pur®

  • All
  • Breathable
  • Comfortable
  • Responsive
  • Supportive

Relieves pain & pressure points

Our Bio-Pur® comfort layer contours to your body and relieves pain-causing pressure points. But it also bounces back fast, so you never feel “stuck” if you move around at night.

Zoned comfort icon

Soothing pressure point relief

Pressure point icon

More responsive than traditional foam

Crafted for lasting comfort

We make our mattresses here in America with the highest quality craftsmanship. They’re built to last and backed by a two-decade warranty.

Warranty icon

Industry-leading 20-year warranty

Support icon

Won’t sag or develop soft spots

Our most versatile mattress for all sleep styles

With a medium feel, the AS3 evenly blends support and softness. The HIVE® layer contours to your body and relieves pain-causing pressure points.

Amerisleep AS3 mattress cover Amerisleep AS3 mattress layers
Ultra-Breathable Comfort

Our soft and ultra-breathable covers help prevent overheating, so you can sleep your best each night.

Stays Cool & Never Feels “Stuck”

Bio-Pur®’s open-cell design keeps you cooler than traditional foam. It also contours to your body to relieve pressure points and bounces back fast, so you won’t feel “stuck”.

Targeted Pressure-Relief System

Our HIVE® transition layer provides targeted support and pressure relief so you can sleep in perfect alignment. It gives your head, back, and legs more support, and your shoulders and hips more cushion.

Durable Support for Decades

The Bio-Core® base layer gives you durable support that lasts for decades. It won’t sag or develop soft spots over time. (And we prove it with our 20-year warranty.)

Inside the AS3 h

With a medium feel, the AS3 Hybrid evenly blends support and softness. The Bio-Pur® layer relieves pain-causing pressure points while the coils respond to body movements and cool the bed down.

Ultra-Breathable Comfort

Our soft and ultra-breathable covers help prevent overheating, so you can sleep your best each night.

Stays Cool & Never Feels “Stuck”

Our Bio-Pur® material’s open-cell design keeps you cooler than traditional foam. It also contours to your body to relieve pressure points and bounces back fast, so you won’t feel “stuck” during the night.

Pocketed Coils for Responsive Bounce

Get comfort, responsiveness, pressure-relief, and motion isolation with our advanced pocketed coils.

Firm Coil Edge Support

Hop in and out of bed easier with our firm coil edge support on both sides of your mattress.

Boosted Support & Structure for Integrity

Thin layer of transition foam used for added comfort and structure for a more durable and resilient base.

Sleep in perfect alignment

Our HIVE® transition layer gives your body targeted support to ease tension and help you sleep in perfect alignment. It provides added support under your head, back, and legs. And it gives your shoulders and hips extra cushion. We’ve also designed HIVE® to reduce pain-causing pressure points.

Adaptable coils offer more support for extra comfort and pain relief

Amerisleep’s pocketed coil system delivers bouncy support from head to toe to keep the body aligned and lifted. These coils comfortably compress to relieve pain-causing pressure points. Our pocketed coil system also features double-density coils around the left and right sides of your mattress to improve edge support.

Is a hybrid right for you?

Amerisleep Hybrid models are designed to offer more support, airflow, and durability.

More bounce

More bounce

Pocket-coil springs provide responsive support with more bounce.

Extra airflow

Extra airflow

Individual coils allow extra airflow beneath the upper foam layers to keep you cool.

Limited motion

Limited motion transfer

Individual coils limit motion transfer and provide more localized cushion.

Durable support

Durable support

Our spring layer features durable pocket-coils that won’t sag or develop soft spots.

Enjoy deeper sleep and more daily energy. Try the AS3 for 100 nights.
100 Night Trial
Risk-free, 100-night trial
with free shipping & returns


Available sizes
  • Twin 38" W x 74" L x 12" H
  • Twin XL 38" W x 80" L x 12" H
  • Full 54" W x 75" L x 12" H
  • Queen 60" W x 80" L x 12" H
  • King 76" W x 80" L x 12" H
  • Cal King 72" W x 84" L x 12" H
  • Split King 38" W x 80" L x 12" H (x2)
Free Shipping

Amerisleep Mattresses come with free shipping within the continental US. We ship our mattresses direct to your home and compressed in an eco-friendly box using FedEx. And in most cases, they arrive in two weeks or less.

Please note: All our products ship separately, so if you’ve ordered a foundation, base, sheets, or any other sleep accessories to go with your new mattress, they may arrive sooner or later than your Amerisleep mattress. But don’t worry, shipping is always free.

20-Year Warranty

Amerisleep mattresses are backed by an industry-leading 20-year warranty. For the first 10 years, we will replace your mattress if you encounter any defects, including sagging greater than 0.75”. And for the second 10 years, we will offer you a prorated replacement.


Our mattresses are compatible with a variety of bed frames and bases.

Mattress Foundations
Our memory foam and hybrid mattresses are best supported on solid or slatted mattress foundations. Slatted bases should have slats no more than 3 inches apart — we even sell our Amerisleep Mattress Foundation designed to pair perfectly with our mattresses.

Platform Beds
Platform beds have a solid or slatted base, so they can provide proper support for our mattresses. If you have a platform bed with large gaps between slats, we suggest buying extra slats or a bunkie board to create a sturdier surface for your mattress and meet warranty guidelines.

Adjustable Bed Frames
Both our memory foam and hybrid mattresses work well with adjustable bed frames. They’re adaptable and flexible, so they can move with the base without becoming damaged or worn. We even sell two adjustable bed frames to pair with our beds: the Amerisleep Adjustable Bed and the Amerisleep Adjustable Bed+.

While our mattresses can work with most bed frames and foundations, it’s not compatible with absolutely every type of mattress support — namely box springs.

Box Springs
Box springs are best paired with innerspring mattresses, and since innerspring beds were the most common for many years, a lot of us have box springs at home. Box springs contain coils within and as a result, are bouncy. Beds with foam layers can experience premature wear, tear, and unexpected damage when paired with one of these because they do not offer the even, sturdy support foam beds need.

Upgrade your mattress with our complete sleep system

Amerisleep pillow
Go ahead and relax

Shop our lineup of pillows engineered for better head and neck support.

Browse Pillows
Amerisleep bedding
Wrap yourself in luxury

Explore our suite of bedding options designed for exceptional softness and comfort.

Browse Bedding

See what our satisfied sleepers have to say

Reviews before January 2020 refer to our AS3 mattress only. Reviews afterward may include our AS3h.

All reviews are unaltered and verified by a 3rd party.


All featured customer reviews are unaltered and verified by a third-party. The comments made by customers are not intended as advertisements, and should be understood as the perspective of each individual based on their experience. These reviews should not be construed to mean that these experiences are universal or that results will always be the same.

Frequently Asked Questions

Why is the Amerisleep AS3 so popular?

The AS3 model has a balanced feel suitable for the majority of sleepers. Side, back, and combination sleepers can all rest well and wake up feeling refreshed. This is why our AS3 mattress is our most popular model and why we recommend it for couples interested in sharing a bed.

Who are medium mattresses good for?

Medium feel mattresses are almost universally comfortable. Side, back, and combination sleepers can usually rest well on medium mattresses. Couples with conflicting sleep styles, such as a side and back sleeper, can usually compromise with a medium feel mattress and still rest peacefully.

Is the AS3 comfy for sleepers over 250 pounds?

Yes, our AS3 mattress can provide comfort for plus-size sleepers. We recommend it for side and combination sleepers because of its delicate balance between cushion and support. Conversely, we don’t recommend it for plus-size stomach and back sleepers.

Heavyset back and stomach sleepers may sink too far into the AS3 mattress because of how their position distributes their bodyweight. A firmer feel can prevent sinkage, so we recommend our AS2 or AS1 mattress for stomach and back sleepers over 250 pounds.

Can the Amerisleep AS3 help sleepers with back pain?

Yes, the AS3 memory foam and hybrid models can help a side sleeper experiencing back pain rest well because the balanced feel cushions a side sleeper’s shoulders and hips while supporting the spine’s neutral alignment.

However, the AS3 mattress may not be right for back sleepers experiencing back pain. Back sleepers may find it feels too soft and allows their spine to bow too far into the mattress. For back sleepers, we recommend our AS2 mattress.

What does the 20-year mattress warranty cover?

We cover structural or manufacturing defects, along with any sagging that exceeds 0.75 inches. Our warranty starts on the day a mattress is purchased and applies only to the original owner.

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