AS1 Mattress
Best firm mattress for back and stomach sleepers seeking cooling support.
Experience robust support and ergonomic alignment with the Amerisleep AS1 mattress, designed for those who prefer a distinctly firm feel. This mattress utilizes advanced memory foam to provide pressure relief without the sensation of sinking, making it ideal for back and stomach sleepers. Engineered for a cool sleep, it features breathable materials and innovative foam structures to maintain comfort throughout the night. The AS1 combines durability, quality construction, and a supportive design for a consistently rejuvenating sleep experience, backed by a 20-year warranty.
$599.00
Owner Satisfaction
4.4
/ 5
Category Rank
2392
/ 6148
#2392 in Mattresses
Price vs Category Average
-64%
Below average
Thickness
10
/ inches
Who it's for
- Ideal for Back and Stomach Sleepers
- Enhanced Breathability
- Budget-Friendly Entry Point
Who should skip it
- Lacks Pressure Relief for Side Sleepers
- Minimal Comfort Layer
- Highly Specialized Feel
Key Specs
Thickness
10 inches
Construction
2 layers of foam (2" Bio-Pur Memory Foam, 8" Bio-Core Support Foam)
Cover
Celiant cover infused with 13 minerals
Firmness
Extra Firm
Ideal for
Back and stomach sleepers
Trial Period
100 nights
Warranty
20 years
Motion Isolation
Minimal
Features
- Eliminates the "stuck" feeling
- Responsive foam recovers shape quickly
- Open-cell foam for cooler sleep
- Consistent support with "no sag" base
- Solid edge support for full surface use
- Breathable Celiant cover regulates temperature
- Made in the USA with eco-friendly materials
- Free shipping and returns
What customers say
The Amerisleep AS1 mattress garners a highly positive, yet specialized, customer sentiment profile. As the firmest offering in Amerisleep's lineup, it is overwhelmingly praised by back and stomach sleepers who require robust support and minimal sinkage. Reviewers frequently highlight its ability to alleviate lower back pain, attributing this success to the supportive structure and the responsiveness of the Bio-Pur memory foam, which is noted for being more breathable and less prone to the 'stuck' feeling than traditional memory foam. Customers appreciate that the AS1 delivers high-quality, durable foam technology at a more accessible price point compared to softer, more complex models, leading to strong perceived value and a sense of getting premium materials without the premium cost. However, the sentiment is notably polarized by its extreme firmness level. Side sleepers or individuals accustomed to plush, deep-contouring mattresses often find the AS1 too rigid, leading to pressure point discomfort and lower ratings from this specific demographic. While Amerisleep incorporates cooling technology, a small subset of users report minor heat retention, a common critique for firmer foam mattresses where less body surface area is exposed. Overall, the AS1 is celebrated as an excellent, high-quality solution for those specifically seeking a very firm, supportive sleep surface, but potential buyers must be certain they prefer a truly firm feel to ensure long-term satisfaction and avoid the common pitfalls reported by those seeking a softer experience.
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