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Leesa is a bed-in-a-box brand known for its balanced foam feel and one-mattress-donated-per-ten-sold social mission. Amerisleep is a US-based maker built around its plant-based Bio-Pur memory foam and a five-model lineup (AS1 firmest through AS5 softest), with the medium AS3 as its flagship. Both sell foam mattresses online with 100-night trials — the difference is what their foam is engineered to do.
I compared the Leesa Original against the Amerisleep AS3 — the closest match on firmness, both landing at a true medium. For more on the Leesa, see the Leesa Original full review, and for broader context the best memory foam mattress guide ranks the category.
Specs Comparison
| Feature | Leesa Original | Amerisleep AS3 |
|---|---|---|
| Top Layer | LSA200 perforated responsive foam | Bio-Pur plant-based memory foam |
| Transition / Support | Memory foam + high-density core | HIVE zoned transition + Bio-Core support |
| Firmness | Medium (5.5/10) | Medium (5–6/10) |
| Profile | 10 inches | 12 inches |
| Trial Period | 100 nights | 100 nights |
| Warranty | 10 years | 20 years |
| Made In | USA & imported components | USA |
The Key Differences
Foam feel. This is the core split. Leesa's LSA200 top foam is a responsive poly-foam that rebounds fast — it sleeps "on top" with little hug and makes repositioning effortless. Amerisleep's Bio-Pur is a memory foam, so it contours more and gives a gentle hug, but because it's a plant-based formulation with a more open cell structure it recovers faster and sleeps cooler than the dense traditional memory foam most people picture. If you want neutral and responsive, Leesa; if you want a cooler-running memory-foam cradle, Amerisleep.
Zoned support. The Amerisleep AS3's HIVE transition layer is segmented into five zones — firmer under the hips and lumbar, softer under the shoulders. For side and combination sleepers, this keeps the pelvis from sinking too far while still cushioning the shoulder. The Leesa is non-zoned, relying on uniform foam, which is simpler but less targeted. For sleepers who notice lower-back sink on uniform foam, Amerisleep's zoning is a real advantage.
Cooling. Neither is a true cooling bed, but they get there differently. Leesa's perforated LSA200 foam improves airflow through the comfort layer; Amerisleep's Bio-Pur breathes better than standard memory foam by design. In testing they ran close, with Amerisleep holding a slight edge over a full night because its open-cell foam resisted heat buildup at the contact point. Dedicated hot sleepers should still look at a coil hybrid.
Warranty and price. Amerisleep backs the AS3 with a 20-year warranty versus Leesa's 10, and builds in the USA — but it costs more, typically near $1,399 for a Queen against the Leesa's $899–$1,099. Both run frequent sales. If upfront value and motion isolation matter most, Leesa; if you want zoned support and double the warranty and will pay for it, Amerisleep.
Performance Scores
Marcus spent 11 years managing mattress showrooms in the Midwest before switching to independent reviewing. He tests beds so you can skip the sales floor.
For more head-to-heads, see the full comparisons index. Or browse our top-rated mattresses of 2026.
Frequently Asked Questions
Which is better, Leesa or Amerisleep?
Both are medium foam beds with different strengths. Amerisleep's AS3 offers zoned HIVE support and plant-based Bio-Pur memory foam that runs cooler than standard memory foam, plus a 20-year warranty — better for side sleepers wanting targeted support. The Leesa Original is more responsive, neutral, and a stronger value with class-leading motion isolation. Choose by priority: zoning and longevity (Amerisleep) or value and feel (Leesa).
How do Leesa and Amerisleep compare in price?
The Leesa Original typically runs $899–$1,099 for a Queen before discounts; the Amerisleep AS3 usually sits higher near $1,399. Amerisleep includes a 20-year warranty versus Leesa's 10 years, and both offer 100-night trials. Both brands run regular sales — check current pricing before deciding and weigh the warranty and trial alongside the sticker price.
Which sleeps cooler, Leesa or Amerisleep?
Amerisleep's plant-based Bio-Pur foam has a more open cell structure than traditional memory foam, so it breathes better and held a slight cooling edge over a full night in testing. The Leesa Original sleeps neutral thanks to perforated LSA200 foam. Neither is a dedicated cooling bed — true hot sleepers should consider a coil hybrid for stronger airflow.