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Most Customizable
Amerisleep AS2 mattress

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The Amerisleep AS3 Mattress

We compared, tested and rated more than 50 foam mattresses. Amerisleep is the most customizable foam mattress on the market.


Customer Rating: 4.6/5
Mattress Advisor Score:       8.4/10

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Product Details


Twin: 38” x 74”
Twin XL: 38” x 80”
Full: 54” x 75”
Queen: 60” x 80”
King: 76” x 80”
Split King 38" x 80" (x2)
Cal King: 72” x 84”


88 lbs. for queen




Memory foam


Medium-firm: 6/10

Amerisleep Highlights

Amerisleep AS3 mattress
  1. The AS3 is Amerisleep’s most popular mattress model. Hitting the sweet spot of mattress firmness (not too firm, but not too soft), it’s a great option for people who tend to change positions throughout the night.
  2. Its foam comfort layers create a soft but responsive feel that relieves pressure points and makes you feel like you’re floating.
  3. The cover contains Celliant, which is known to reduce pain, regulate body temperature, and promote healthy blood circulation.


Purchase Experience

Delivery Format

Compressed and rolled in a box that is 19" x 19" x 42" for a queen

Trial Period

100 nights


20-year limited warranty

Return Policy

Full refund on returns within 100 days

What Makes The Amerisleep AS3 Different?

The Amerisleep AS3 mattress is the most popular model Amerisleep offers out of its collection of five memory foam mattresses. This model is so popular because it’s built to suit all sleepers! It’s right in the middle of the firmness scale, offers great motion isolation for couples, and can provide to comfort in any sleeping style.

A Look Inside

Inside the Amerisleep AS3 mattress

The layers inside the Amerisleep AS3 are described as they appear from top to bottom:

  • High-performance Celliant cover: Designed to convert your body heat into infrared
  • Bio-Pur foam: Breathable cooling layer with open-cell structure
  • Affinity layer: Ergonomic transition foam; provides pressure relief
  • Bio-Core foam support layer: Eco-friendly durability and support

Mattress Reviews

What Amerisleep Customers Have to Say

“After 12 years on our old mattress, we splurged in Amerisleep and am so glad we did. Back and neck pain gone!” Sam
“A very supportive mattress for my severe back problems; I now get a most restful sleep and a longer one.” Ika
“Great bed I use personally. I’m a very light sleeper and this thing keeps me sleeping all night!” T. Knox


How does the 100-night trial work?

Your trial begins the day you receive your mattress. Then, you have 100 days to decide if you want to return the AS3 for a full refund or exchange it for a different model. Contact a representative from the customer support team to begin the process.

How long will it take for my AS3 mattress to ship?

The Amerisleep AS3 Ships free to the lower 48 states and usually arrives within 5-10 business days.

Will my AS3 have a break-in period?

It does – in fact, all mattresses do! It can take up to 30 days to fully break in your new mattress. Luckily, you have plenty more than 30 days in your trial period!

Is the AS3 mattress eco-friendly?

All the foams in the AS3 mattresses are CertiPUR-US® certified, meaning they meet some of the most rigorous standards for emissions, content, performance, and durability.

Can I clean my AS3 mattress?

The removable covers on Amerisleep mattresses are easily washable for normal cleaning issues like perspiration and odor removal.

Verified Customer Reviews


Verified Reviewer
Sleeper Profile
  • Sleeps with partner
  • Side sleeper
  • Snores a lot
  • Suffers from back pain
  • overweight
Owned mattress for: 3-6 mo.
Recommends to a friend?: Yes
Overall Satisfaction: 10/10
Show Details

On a scale from 1-10 (with 10 being the best), how would you rate your mattress on the following factors?

Mattress-Buying Experience
Ease of Set-up
Body Support
Motion Isolation
Cooling Properties
Edge Support