Amerisleep

AS3

Best for: Side and back sleepers

A 12″ medium foam bed, Amerisleep's most popular.

Good to know: The Twin is 74″ long, an inch shorter than most.

Type
Memory foam
Height
12″
Sizes
6 ready-made
Certified
CertiPUR-US
Weight (queen)
88 lb
Firmness, according to reviewersMedium

Pick it if

  • You sleep on your side
  • You sleep on your back
  • You sleep on your stomach
  • You’re a heavier person
  • You share the bed

From independent reviewers’ findings, credited below.

38 × 80 in · 12″ tall

Where to get it

  • amerisleep.comQueen $1,249 (sale, was $1,749) · checked Oct 16 See price
  • For heavier people · Split kingReviewers: Suited to all positions up to 300 lb; Split King Lists

Returns: 100 nights; after the first 30 nights you can return for a full refund; free shipping and returns Details

We may earn a commission if you buy. Check the price for your exact size and height on the seller’s site.

The short version

Worth a look if

  • Side and back sleepers

Good

  • A 12″ medium foam bed, Amerisleep's most popular.
  • Trial: 100 nights; after the first 30 nights you can return for a full refund; free shipping and returns
  • 14 of 29 GoodBed owners rated back support 4-5 out of 5 and 13 rated pressure relief 4-5, including several owners of 6-10 years.
  • Height: 12″

Think about

  • The Twin is 74″ long, an inch shorter than most.
  • 11 of 26 rated sleep quality 1-2 out of 5, and an 8-year owner said it was very worn and rated it 1-2 overall.
  • Standard sizes only: no RV, odd or custom sizes listed

Based on the maker’s published specs and terms, and the owner reviews linked below. We haven’t slept on it. Something wrong? Tell us.

What owners say

From owners of this model A small set of real reviews, each linked to its source. Not a star rating.

Every size it comes in

Taken from the maker’s size options, in the inches it publishes. Tap a size to compare every mattress made in it. Sizes marked “as listed” don’t exactly match a standard size, so check your frame.

Price for every size

From the maker’s site on Oct 24, 2026. Prices change often, so check before you buy.

SizeInchesPrice
Twin38 × 74$999 saleSee it
Twin XL38 × 80From $1,049 saleSee it
Full54 × 75$1,199 saleSee it
Queen60 × 80$1,249 saleSee it
Cal King72 × 84$1,549 saleSee it
King76 × 80$1,549 saleSee it

Video reviews

AS3 · Review

Amerisleep Mattress Review 2023 - Reviewing the AS3 Memory Foam Model!

Sleepopolis · YouTube ↗

AS3 · Review

Amerisleep AS3 Mattress Review 2021 (UPDATED)

Sleep Advisor · YouTube ↗

AS3 · Review

Amerisleep AS3 Mattress Review - A Plush and Affordable Bed

Sleep Is The Foundation · YouTube ↗

How it compares

Beside the most similar mattresses from other brands.

AS3AmerisleepPro FoamBearCypressBrentwood HomeThe Eco BlissEco Terra
TypeMemory foamMemory foamMemory foamFoam
Queen price$1,249$999$899$1,199
Height12″12″11″ or 13″8″ or 10″ or 12″
Trial100 nights365 nights365 nights100 nights
Odd sizesNoneNoneNoneNone
Expert reviews311None yet

What’s inside

  1. 1Refresh cooling cover
  2. 2Bio-Pur memory foam
  3. 3HIVE zoned transition layer
  4. 4Base foam
Feel
Medium (5 on Amerisleep's comparison chart)
Height
12″
Custom sizes
Not offered for this model

Returns and ordering

Trial and returns

100 nights; after the first 30 nights you can return for a full refund; free shipping and returns

Before you order

  • Measure inside the frame, not the old mattress
  • Check clearance above for the height you pick
  • Make sure your base supports it
  • Buy sheets in the same exact size

Questions

What is it made of?

12″ all-foam: Bio-Pur memory foam and HIVE zoned support under a Refresh cooling cover. Amerisleep calls it its most popular model.

How firm is it?

Medium (5 on Amerisleep's comparison chart) That’s the maker’s description; we haven’t measured it.

Which sizes and heights can I get?

6 sizes, 12″. See every size. Confirm your exact size and height with the seller.

Are the reviews about this exact mattress?

From owners of this model. Ratings only; long-term owners have earlier versions of the AS3. A few entries look duplicated.

Where did this information come from?
  1. feel, profile height, specification table of inches per size, trial and warranty text
  2. variant list with sizes, list price and discounted (displayed) price

Checked 2026-10-16. Specs and terms can change.

Similar mattresses

All mattresses
AS3Twin XL · 38 × 80 inSee price
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