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Firm mattress that ends the morning backache
Amerisleep AS1 Firm Memory Foam Mattress
Amerisleep's AS1 firm memory foam mattress for sleepers who want support without the squish.
Deal score 6.6 · Great deal
$849.00$1,349.00 Amerisleep's regular price
You save $500.00 at Amerisleep
Checking it's still available…
Why it's a great deal
- Amerisleep lists its regular price at $1,349.00: 37% off by its own figures
- Rated 4.7 out of 5 by 771 buyers
Every store we checked
- AmerisleepNew
In stock
$849.00Observed at 9:03 AM
From Amerisleep
- Firmest Amerisleep mattress, designed for back and stomach sleepers
- 10-inch profile fits in any bed frame
- Plant-based Bio-Pur® memory foam for cooling comfort
- Ultra-supportive feel to facilitate healthy stomach and back sleeping
- Durable Bio-Core® base foam prevents sagging and sinkage
- Fiberglass-free, eco-friendly and non-toxic
- Sizes
- Twin, Twin XL, Full, Queen, King, Cal King, Split King
- Materials
- 2 inches of Bio-Pur® plant-based memory foam over 8 inches of Bio-Core® foam; CertiPUR-US® certified, low in VOCs, fiberglass-free
- Fit
- Firm feel; recommended for back and stomach sleepers, not recommended for side sleepers
- Sizing
- Firm mattress; the brand says side sleepers will likely find it uncomfortable and recommends softer models for them
- Care
- Do not flip; rotate every three to six months to even wear
- Guarantee
- 20-year warranty: full replacement for defects such as sagging over 1.5 inches for the first 10 years, prorated replacement for the second 10 years
- Returns
- Easy and free returns; 365-night risk-free sleep trial with full refund if not loved after the first 30 nights
- Shipping
- Free shipping within the continental US via FedEx, compressed in a box; most arrive in two weeks or less; accessories ship separately
- In the box
- Mattress compressed in an eco-friendly box
What buyers say
Buyers like
- Sleeps cool and breathable
- Comfortable yet supportive
- Relieves pain and pressure points
- Good for restless sleepers and couples
- Eco-friendly and fiberglass-free
- Made in the USA
Buyers complain about
- Some side sleepers find it too firm
Specs
- Firmness Level
- Firm
- Mattress Type
- Memory Foam
- Type
- Mattress
- Length
- 80 in (Queen)
- Width
- 60 in (Queen)
- Coil Type
- Coils
- Core Material
- Bio-Core base, Foam
- Material
- Fiberglass Free
- Fill Material
- Memory Foam
- Fill Type
- Bio-Pur memory foam
Ask our shopping agent
About the Amerisleep AS1 Firm Memory Foam Mattress
The Amerisleep AS1 is the firmest mattress in Amerisleep's all-foam lineup, built for stomach and back sleepers who want a flat, supportive surface. It uses Bio-Pur plant-based memory foam over a Bio-Core base, and Amerisleep markets it as fiberglass-free and non-toxic. The queen measures 60 by 80 inches. The best new price is $849 at Amerisleep as of November 4, 2026, and it is the only new-price listing we track, so there is no lower recent range to compare against.
Best forStomach sleepers who need a flat, firm surfaceBack sleepers who dislike sinking into foamShoppers avoiding fiberglass in mattress constructionHot sleepers who want less foam hug
Pros
- Firm feel keeps hips and shoulders from sinking out of line
- Bio-Pur foam is plant-based and breathes better than dense traditional memory foam
- Fiberglass-free construction
- All-foam design works on most bed frames, including adjustable bases
- Simple single-firmness option at a lower price than the AS2 or AS3
Cons