What’s inside the AS3
- 3" Bio-Pur® comfort foam Plant-based (castor-oil) open-cell memory foam — merchant positions it as more responsive / less “stuck” than traditional petroleum-heavy memory foam.
- 2" Affinity foam with HIVE® Five-zone transition: softer at shoulders and hips, firmer at head, back, and feet.
- 7" Bio-Core® support Base support foam that rounds out the 12" all-foam profile.
- Refresh cover Merchant claims the sleeping surface stays about 7°F cooler over 8 hours vs a traditional 100% polyester cover. Removable/washable per PDP FAQ. CertiPUR-US® claimed; fiberglass-free.
Foam vs hybrid
On the same AS3 page you can choose all-foam AS3 or AS3 Hybrid (merchant blog: 3" Bio-Pur + 8" pocketed coils + 1" base foam, still 12" tall). Hybrids typically add bounce and a stronger perimeter; all-foam usually wins on motion isolation.
Key specs
| Model | Amerisleep AS3 (all-foam) · AS3 Hybrid optional |
|---|---|
| Profile | 12 inches |
| Feel (merchant) | Medium (comparison table: 5) |
| Recommended positions (merchant table) | Side / back |
| All-foam layers | 3" Bio-Pur · 2" Affinity/HIVE · 7" Bio-Core |
| Made | USA of U.S. and imported components (covers sewn in Canada) |
| Queen foam offer (as of Sep 11, 2026) | $1,149 |
| Queen hybrid offer | $1,349 |
Pros and cons
Pros
- Clear medium feel with plant-based Bio-Pur comfort layer
- HIVE five-zone transition for pressure distribution
- 100-night trial with free courier pickup on authorized returns
- 20-year limited warranty (longer than many foam peers)
- Foam and hybrid options on one page
Cons
- Common feedback: can sleep warmer than firmer/thinner Amerisleep models
- Sitting edge often rated average-to-weak for all-foam
- Too soft for many stomach sleepers and some heavier back sleepers
- Merchant asks you to wait ~30 nights before starting a return
Heat, edge, and “who should skip” themes reflect common third-party feedback (for example Sleep Foundation and NapLab), not a Choice Worth Making lab test.
Who should buy / who should choose something else
Good match if…
- You want medium sink with zoned support
- You’re primarily a side sleeper (or a lighter back sleeper)
- You care about a long limited-warranty runway
- You might upgrade to hybrid for edge/bounce later
Choose something else if…
- Stomach sleeping is your main position
- You’re a heavier back sleeper who usually needs firm
- You want the absolute strongest sitting edge in foam
- You need direct shipping to AK/HI (Amerisleep doesn’t ship there directly)
Price, trial, warranty & shipping
Offer prices from Amerisleep schema as of September 11, 2026. Around that research date the merchant also published a sitewide AS500 / $500 off mattress promo (time-sensitive). Check the live site for whatever promotion is active when you shop.
| AS3 foam — Twin | $899 |
|---|---|
| AS3 foam — Twin XL | $949 |
| AS3 foam — Full | $1,099 |
| AS3 foam — Queen | $1,149 |
| AS3 foam — King / Cal King | $1,449 |
| AS3 foam — Split King | $2,048 |
| AS3 Hybrid — Queen | $1,349 |
| AS3 Hybrid — King / Cal King | $1,549 |
| Trial details | 100 nights from arrival; merchant asks buyers to wait at least 30 nights before initiating a return; free courier pickup; mattresses only (accessories final sale) |
| Warranty details | Years 1–10: repair or replace qualifying defect (labor/transport not covered). Years 11–20: replacement at 50% of original purchase price plus shipping/labor. Visible indentation > 1.5" may qualify. |
| Shipping | Free curbside FedEx to contiguous U.S.; ships in roughly 1–10 business days then 1–5 in transit. No direct shipping to AK, HI, Canada, Mexico, or APO. |
How it compares
Versus Tuft & Needle’s 2024 Original on this site: AS3 is medium memory-foam with Bio-Pur / HIVE zoning and a 20-year limited warranty; T&N Original is medium-firm responsive polyfoam with a 10-year limited warranty and a lower typical entry price. Versus firmer Amerisleep models: AS3 sinks more and may sleep warmer for some people — that’s a deliberate medium feel, not a bug.
See current AS3 pricing
Confirm foam vs hybrid, size, and any live merchant promo on Amerisleep.
See current AS3 pricingOpens the merchant product page.
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