AS3

Formerly known as Liberty

The AS3 is our most versatile mattress. It evenly blends support and softness, so it’s great for people who change positions as they sleep and couples with different sleep styles. It’s also our most popular mattress overall. We combine our proprietary Bio-Pur™ and Affinity with SMT comfort layers to create a soft but responsive feel that relieves pressure points and makes you feel like you’re floating. Plus the high-performance Celliant® cover contains thermoreactive yarn to safely turn body heat into infrared. You'll love it, guaranteed.

Profile height: 12-inch Feel: Medium
Size
Price
$1399 $1199 with promo
Save $200.00
 

what a great thing

A vey supportive mattress for my severe back problems; I now get a most restful sleep and a longer one

By 

from pottstown pa

About Me Midrange Shopper

 

Great Sleeping Experience on Liberty Bed

It's been a great sleeping experience.

By 

from O'Fallon IL

About Me Midrange Shopper

All featured customer reviews are unaltered and verified by PowerReviews (view disclaimer).

No mattress is more carefully engineered.
  • For Back & Stomach Sleepers

  • For Side & Combo Sleepers

  • AS1

    Formerly Americana

    Firm

  • AS2

    Formerly Revere

    Medium Firm

  • AS3

    Formerly Liberty

    Medium

  • AS4

    Formerly Colonial

    Medium Soft

  • AS5

    Formerly Independence

    Soft

Too firm:
Pressure Points

(Futon mattress)

Too soft:
No support

(Pillow top mattress)

High-Performance Celliant® Cover

Celliant® is an advanced fabric made with 13 thermoreactive minerals that helps improve the performance of the mattress.

Extra-Breathable cooling layer

Our Bio-Pur™ foam is five times more breathable than traditional memory foam, because of it’s advanced open-cell structure. It wicks away heat while you sleep and can help keep you cool and comfortable.

"Feels-like-you're-floating" layer

The affinity transition layer is soft and responsive. It reacts to your body position to evenly support your weight and can help relieve pressure points, so it feels as if you’re weightlessly resting on a cloud.

Sag-free & Eco-friendly Support

Our Bio-Core™ foam support layer won't sag even after decades of use. And, like our Bio-Pur™ foam, it’s partially made from plants instead of petroleum so it’s eco-friendly.

Tested to get you more sleep.

Amerisleep mattresses are expertly designed to help you get more sleep — guaranteed. Our mattresses are built with performance in mind down to the last detail. That even includes the cover, which is a critical part of a mattress because it's the layer closest to your body when you sleep.

Amerisleep is officially licensed to use Celliant® in our covers. This advanced fabric combines 13 minerals into thermoreactive yarn that converts body heat into infrared.

We created a superior memory foam that helps keep you cool.

Traditional memory foam is made from dense material, so it traps your body heat and can make you sweaty and uncomfortable while you’re in bed — and who can sleep like that?

We developed our foam with an enhanced "open cell structure," which means there is more air space between the foam particles. That space wicks away heat while you sleep, and can keep you cooler and more comfortable. Remember, you have 100 nights to try it for yourself - if you don't love it, give us a call and we'll pick up the mattress and refund you completely!

On top of that, our foam is also the most environmentally friendly. Our patented foam-making process uses plants to replace some petroleum, and is the only manufacturing method that exceeds the standards of the Clean Air Act.

More comfort. Less “stuck”.

Our foam is also better than traditional memory foam because it recovers its shape faster. With a typical foam mattress, you often wind up “stuck” when you change positions but the mattress is still holding your previous shape. That’s because it takes around 60 seconds for the foam to bounce back.

Ours bounces back in just four seconds, so as you move at night your mattress keeps up with you, providing superior comfort.

 

Wonderful nights sleep

Was skeptic but glad I purchased :)

By 

from Harford MD

About Me Midrange Shopper

 

what a great bed !!!

This company was easy to work with and delivered everything they promised and more. Unusual these days thanks amerisleep

By 

from weare nh

About Me Midrange Shopper

All featured customer reviews are unaltered and verified by PowerReviews (view disclaimer).

Use it on any frame you want (even none!)
Directly on the floor

No furniture, no problem. You can put your Amerisleep mattress directly on the floor.

Box Spring

If you want to use your existing box spring, place a piece of 3/4” moisture resistant plywood directly on top.

Flat or slatted frame

A flat platform will work perfectly, so long as the gaps between the slats are no more than three inches apart.

Adjustable Base

Adding an adjustable base can elevate your comfort, allowing you to read or watch tv in bed.

What would you do with more energy
and less pain?

Imagine waking up each morning with no pain and increased energy. How would that change the way you approach your day? Would you finally be able exercise regularly? Would you be able to perform better at work instead of constantly feeling groggy and needing another cup of coffee?

Sleep quality is so important because we spend about a third of our lives in bed!

That means, besides our jobs and our families, our sleep probably has the biggest impact in our quality of life. The number of daily problems that go away with a good night’s sleep is astounding — but that only happens if you actually do something to improve your sleep.

If you just keep things the same, you’ll keep getting the same disappointing results. And don’t you deseve better?

 

Love the Bed!

By 

from La Crescent MN

About Me Midrange Shopper

 

Very comfortable

By 

from Columbia SC

About Me Midrange Shopper

 

Well worth the money

By 

from Tampa

About Me Midrange Shopper

 

I am sleeping again!!

By 

from tampa florida

About Me Midrange Shopper

All featured customer reviews are unaltered and verified by PowerReviews (view disclaimer).

100 Night Trial, Free Returns
Learn more about our 100 Night Sleep Trial
Sleep Trial & Warranty Information
Back to Front
 

Yes I Love it!

I'm usually a budget shopper but there are some things you cant skimp on. I have had neck back and shoulder problems for years. I knew I needed a good mattress. I read so many reviews of this mattress/company and people saying they had less pain. I 100% agree! I feel so much better when I wake up. Makes getting out of bed harder for myou husband he's been sleeping longer!

By 

from Kansas

About Me Midrange Shopper

All featured customer reviews are unaltered and verified by PowerReviews (view disclaimer).

We use more eco-friendly memory foams.
Yet another way we’re better.

Amerisleep is one of the most eco-friendly mattress companies. From the way we make our foam all the way through how it arrives at your door, we work hard to use processes that are sustainable — literally from start to finish.

First, our patented Variable Pressure Foaming (VPF) process allows us to use plant-based materials to replace some petroleum, so it's better for the environment. It also reclaims and recycles any waste, so there is no air pollution. It's the only process for making foam that meets the Clean Air Act's standards.

Once we've made your mattress, we pack it up in a box made from post-consumer materials before shipping it to your door. Being more eco-friendly is just one more thing that makes our mattresses different than our competitors.

Plant-based
Formula

Zero emissions
manufacturing

eco-box
delivery

Fast, Easy & Free Shipping

Your mattress ships to you compressed in an eco-friendly box small enough that we can use FedEx. That means it gets to you quickly, usually within a week of your purchase!

 

Liberty Bed

very comfortable sleep like a baby

By 

from Charlotte NC

About Me Midrange Shopper

 

Revelation

We haven't slept this well in years. Sometimes I find myself staying in bed not because I'm tired but because it's just soooo comfortable.

By 

from oregon

About Me Midrange Shopper

All featured customer reviews are unaltered and verified by PowerReviews (view disclaimer).

See what our customers have to say -
don't you wish you slept this good?

All featured customer reviews are unaltered and verified by PowerReviews (view disclaimer).

REVIEW SNAPSHOT®

by PowerReviews
AmerisleepAS3
 
4.7

(based on 2805 reviews)

Ratings Distribution

  • 5 Stars

     

    (2183)

  • 4 Stars

     

    (496)

  • 3 Stars

     

    (98)

  • 2 Stars

     

    (20)

  • 1 Stars

     

    (8)

98%

of respondents would recommend this to a friend.

Pros

  • Comfortable (2546)
  • Good support (2492)
  • Holds shape (2183)
  • Soft feel (1798)
  • Durable (1789)

Cons

  • Too hard (247)
  • Too soft (77)
  • Develops cavity (43)
  • Squeaks (11)
  • Sleeps hot (5)

Best Uses

  • Primary bed (2660)
  • Guest bed (268)
    • Reviewer Profile:
    • Midrange shopper (1971), Budget shopper (492), High-end shopper (277)

Reviewed by 2805 customers

Displaying reviews 1-10

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5.0

Best sleep in years

By 

from Tuscaloosa,Al

About Me Midrange Shopper

Verified Buyer

Pros

  • Comfortable
  • Good Support
  • Holds Shape
  • Soft Feel
  • Sturdy

Cons

    Best Uses

    • Primary Bed

    Comments about Amerisleep AS3:

    .

     
    5.0

    Nice Bed

    By 

    from Mansfield, TX

    About Me Budget Shopper

    Verified Buyer

    Pros

    • Comfortable
    • Good Support
    • Holds Shape
    • Soft Feel

    Cons

      Best Uses

      • Primary Bed

      Comments about Amerisleep AS3:

      Was worried about firmness and heat retention. Both aren't an issue.

       
      4.0

      Great shipping, customer service and overall quality.

      By 

      from Hollis,NH

      About Me Midrange Shopper

      Verified Buyer

      Pros

      • Holds Shape

      Cons

      • Too Soft

      Best Uses

      • Primary Bed

      Comments about Amerisleep AS3:

      Chose matress based on website quiz on how we sleep. The matress is a little too soft but still comfortable.

       
      5.0

      Great mattress / easy delivery!

      By 

      from San Francisco, CA

      About Me Midrange Shopper

      Verified Buyer

      Pros

      • Comfortable
      • Good Support

      Cons

        Best Uses

        • Primary Bed

        Comments about Amerisleep AS3:

        for my main bed every night. very happy with it.

         
        5.0

        Great Night's Sleep

        By 

        from Durango

        About Me Midrange Shopper

        Verified Buyer

        Pros

        • Comfortable
        • Good Support
        • Holds Shape
        • Soft Feel
        • Sturdy

        Cons

          Best Uses

          • Primary Bed

          Comments about Amerisleep AS3:

          From the first night, this mattress was all it was advertised to be. Being a side sleeper, I needed sturdy, but a soft feel. It delivered. My sleep is not disturbed when my partner moves, because the mattress doesn't shift.

           
          5.0

          My back feels so much better!

          By 

          from Charlottesville, VA

          About Me Midrange Shopper

          Verified Buyer

          Pros

          • Affordable
          • Comfortable
          • Good Support
          • Holds Shape
          • Soft Feel
          • Sturdy

          Cons

            Best Uses

            • Primary Bed

            Comments about Amerisleep AS3:

            I have only been sleeping on our new bed for three months now but our backs feel so much better! We have suffered for almost 10 years with a bad bed that we put toppers on. We spent just as much on our mattress back then but the quality seems much better this time. It has just the right amount of softness to firmness that we need to be comfortable and there isn't an incline towards my husband who weighs more.

             
            5.0

            Best purchase I've made since moving

            By 

            from Austin, Texas

            About Me Midrange Shopper

            Verified Buyer

            Pros

            • Comfortable
            • Good Support
            • Soft Feel

            Cons

              Best Uses

              • Primary Bed

              Comments about Amerisleep AS3:

              Bought a new king sized bed when we moved into our new apartment. COULD NOT be happier with his purchase. My boyfriend has back issues and sleeps like a baby on this bed. Great product!

               
              5.0

              Very comfortable mattress.

              By 

              from Wisconsin

              About Me Budget Shopper

              Verified Buyer

              Pros

              • Comfortable
              • Good Support
              • Holds Shape
              • Soft Feel
              • Sturdy

              Cons

                Best Uses

                • Primary Bed

                Comments about Amerisleep AS3:

                I have had this 3 months and sleep very well on it.

                 
                5.0

                I would buy this mattress again.

                By 

                from Huntsville, AL

                About Me Midrange Shopper

                Verified Buyer

                Pros

                • Comfortable
                • Good Support
                • Holds Shape
                • Soft Feel
                • Sturdy

                Cons

                  Best Uses

                  • Primary Bed

                  Comments about Amerisleep AS3:

                  This mattress is used every night in our master bedroom.

                   
                  5.0

                  This mattress was an extraordinary purchase!

                  By 

                  from Saugerties, NY

                  About Me Budget Shopper

                  Verified Buyer

                  Pros

                  • Comfortable
                  • Good Support
                  • Holds Shape
                  • Soft Feel
                  • Sturdy

                  Cons

                    Best Uses

                    • Primary Bed

                    Comments about Amerisleep AS3:

                    This was a longtime consideration purchase. We needed a new king size bed and Google of "best mattress" brought us to Amerisleep. Google was right. I chose poorly for the firmer model initially, against my husband's advice. Metrics convinced me to go softer, and the return/replace process was smooth, friendly, and fast. Not a single complaint to be had!!

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                    *Reviews

                    All featured customer reviews are unaltered and verified by PowerReviews. 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.