AS4

Formerly known as Colonial

The AS4 is our medium-soft mattress. It’s great for side sleepers, and anyone who likes more cushioning while they’re in bed. We combine our proprietary, cooling Bio-Pur™ foam and Affinity with SMT comfort foam 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 is made with thermoreactive yarn to safely turn body heat into infrared. Your comfort is guaranteed.

Profile height: 12-inch Feel: Medium Soft
Size
Price
$1699 $1499 with promo
Save $200.00
 

Wonderful bed!!

My husband and I have both noticed a reduction in back pain and better overall sleep.

By 

from Phoenix AZ

About Me Midrange Shopper

 

LOVE THIS MATTRESS

Fast Shipping Customer Service was great! Loving this new bed!! I purchased the whole set up mattress frame pillows and mattress topper....Worth the money!!

By 

from Greensboro NC

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.

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

The Affinity layer with Surface Modification Technology (SMT) is our ergonomic transition foam. It has “zones” that provide extra pressure relief in key areas like the shoulders and lower back, along with precision-cut channels that carry away even more heat and moisture. It’s enough to make you feel like 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.

 

Super Comfy!

I'm getting the best sleep ever! My Fitbit tracker shows my awake and restless times were cut in half.

By 

from Chandler AZ

About Me Midrange Shopper

 

Most Comfortable Bed Ever

I sleep on this bed every night and it is very comfortable. plus..it is made in America! Would order more products from Amerisleep and highly recommend to others.

By 

from Albany New Yor

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?

 

Awesome

By 

from Reno NV

About Me Midrange Shopper

 

Extremely comfortable

By 

from CA

About Me Midrange Shopper

 

Wish we had this bed 10 years ago!

By 

from VT

About Me Midrange Shopper

 

Geat quality

By 

from Campbellsville

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
 

very comfortable

This mattress is used on our spilt-king adjustable frame and it feels very good.Most of the time when I go to bed at night I watch TV for an hour but I fall asleep with in ten minutes. The mattress is not too firm but just right and I get a good night sleep. I looked at many mattress and and I glad I choose the colonial mattress from amerisleep.

By 

from St.Augustine Fl

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!

 

This is an incredibly comfortable mattress. Worth every dime

Except for my occasional bouts of insomnia I'm enjoying the best sleep of my life due vastly to this mattress

By 

from Medford OR

About Me Midrange Shopper

 

This is our 4th Mattress!

Amazing product and very happy with the quality of the Colonial bed. Recommend it!

By 

from Gilbert Az

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
AmerisleepAS4
 
4.7

(based on 587 reviews)

Ratings Distribution

  • 5 Stars

     

    (446)

  • 4 Stars

     

    (111)

  • 3 Stars

     

    (19)

  • 2 Stars

     

    (6)

  • 1 Stars

     

    (5)

97%

of respondents would recommend this to a friend.

Pros

  • Comfortable (530)
  • Good support (509)
  • Holds shape (430)
  • Soft feel (410)
  • Durable (327)

Cons

  • Too hard (59)
  • Too soft (12)
  • Develops cavity (11)
  • Squeaks (4)

Best Uses

  • Primary bed (561)
  • Guest bed (41)
    • Reviewer Profile:
    • Midrange shopper (410), High-end shopper (109), Budget shopper (53)

Reviewed by 587 customers

Displaying reviews 1-10

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5.0

This bed has no competition and I get the best rest in it

By 

from Mesa AZ

About Me Midrange Shopper

Verified Buyer

Pros

  • Comfortable
  • Good Support
  • Holds Shape

Cons

    Best Uses

    • Primary Bed

    Comments about Amerisleep AS4:

    I would never rest my head on another bed again even if I cheating on my wife with Gigi Hadid I'd still go home to her in my amerisleep bed. I currently wake up every day well rested to be able to kick booty at all that comes my way. I just got a new promotion. Buy this bed and you will be successful and never regret it.

     
    4.0

    Great mattress but took a long time to receive it.

    By 

    from Columbia Maryland

    About Me Midrange Shopper

    Verified Buyer

    Pros

    • Comfortable
    • Good Support
    • Holds Shape
    • Soft Feel

    Cons

    • Took a long time to receive.

    Best Uses

    • Primary Bed

    Comments about Amerisleep AS4:

    This mattress is extremely comfortable and a big upgrade from the one we came from.

    Service and delivery comments:

    It took to long to receive this mattress. I believe it was a week before it was even shipped.

     
    5.0

    Excellent sleep every night!

    By 

    from Hershey, PA

    About Me Midrange Shopper

    Verified Buyer

    Pros

    • Comfortable
    • Good Support
    • Holds Shape
    • Soft Feel

    Cons

      Best Uses

      • Primary Bed

      Comments about Amerisleep AS4:

      From the first night we used the new mattress, our sleep improved greatly. No more waking up in the middle of the night or feeling like we were sleeping on a slab of concrete. The only problem I see is that it's hard to get out of bed in the AM because it's so comfortable!

      Service and delivery comments:

      No problems at all with the delivery.

       
      4.0

      Great support and well built

      By 

      from San Leandro,ca

      About Me Midrange Shopper

      Verified Buyer

      Pros

      • Comfortable
      • Good Support
      • Holds Shape

      Cons

        Best Uses

        • Primary Bed

        Comments about Amerisleep AS4:

        This mattress was originally for me since I like my bed softer than my wife. She had the AS3. The AS3 was too firm so she took over my AS4 :( needless to say after a month on the AS3 I have decided to exchange it for an AS4. I am no longer experiencing soreness in the morning like with my old Sleep number bed. These beds are well built, they don't sleep hot and they have the right amount of support to have you wake up ready for the day

        Service and delivery comments:

        Fast delivery and great service

         
        5.0

        Best night sleep I ever had

        By 

        from silverado, ca

        About Me Midrange Shopper

        Verified Buyer

        Pros

        • Comfortable

        Cons

        • no cons after months of restful sleep...

        Best Uses

        • Primary Bed

        Comments about Amerisleep AS4:

        I would never buy another mattress

        Service and delivery comments:

        The services was outstanding.

         
        5.0

        Wonderful mattress and customer service

        By 

        from Chapel Hill, NC

        About Me High-end Shopper

        Verified Buyer

        Pros

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

        Cons

          Best Uses

          • Primary Bed

          Comments about Amerisleep AS4:

          We have thoroughly enjoyed our Amerisleep mattress and found the customer service to be exceptional.

           
          5.0

          I would buy this mattress again!

          By 

          from Bethlehem, PA

          About Me Budget Shopper

          Verified Buyer

          Pros

          • Comfortable
          • Good Support
          • Holds Shape

          Cons

            Best Uses

              Comments about Amerisleep AS4:

              The mattress exceeded my expectations. I have tried memory foam topper and did not like them. However, this memory foam mattress is the most comfortable, without the loss of support, that I have ever experienced.

              Service and delivery comments:

              The mattress with delivered on when promised and in perfect condition.

               
              5.0

              Great company, great mattress!

              By 

              from Saunderstown, RI

              About Me Midrange Shopper

              Verified Reviewer

              Pros

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

              Cons

                Best Uses

                • Guest Bed
                • Primary Bed

                Comments about Amerisleep AS4:

                We purchased the AS3 mattress based on the Website recommendation for the type of sleepers we are, but found it too firm. My husband is 6' at 215 and I am at 5'7" at 165, fairly mid-range I think, with no health or pain issues. We requested an exchange for an AS4, the softer one, and it couldn't have been easier. Amerisleep customer service staff responded to my request immediately, followed up with emails which included instructions on what to do with the mattress we did not want, and sent the new mattress out immediately. It came only five days after our request to exchange, and the pickup of the original mattress was prompt and without any problems. That's pretty wonderful service! The AS4 is softer and cozier and we are very happy with it, sleeping like babies. The quality of the mattress is excellent and it had no smell whatsoever when we unpacked it. The whole experience was stress-free and we are so happy that we did not have to trudge through mattress stores.

                Service and delivery comments:

                Excellent service and very quick delivery!

                 
                5.0

                Amazing mattresz

                By 

                from Kalispell Montana

                About Me Midrange Shopper

                Verified Buyer

                Pros

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

                Cons

                  Best Uses

                  • Primary Bed

                  Comments about Amerisleep AS4:

                  I was a little hesitant purchasing a bed online but I read the reviews and I liked the return policy. I love this bed! I will be purchasing another for the spare room!

                   
                  5.0

                  This is a great mattress

                  By 

                  from Jacksonville, FL

                  About Me Midrange Shopper

                  Verified Buyer

                  Pros

                  • Comfortable
                  • Good Support

                  Cons

                    Best Uses

                    • Guest Bed
                    • Primary Bed

                    Comments about Amerisleep AS4:

                    This has been great, not to firm for me and not to soft for my wife.

                    Displaying reviews 1-10

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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.