Amerisleep AS5 Mattress Reviews (2026)

The AS5 is worth considering if pressure relief is your first priority. Its thick comfort system cushions the shoulders and hips without making every position change feel like work, and it keeps partner movement from spreading across the bed. Few all-foam mattresses combine this much softness with such a quick recovery.

The compromise is support. Back sleepers who like a deep cradle may be comfortable, but stomach sleepers and anyone who wants the hips held high should choose a firmer model. The perimeter also compresses noticeably while seated. This is a focused choice for plush comfort, not a bed designed to satisfy every sleep style.

Who It’s For

• Side sleepers who need generous cushioning at the shoulders and hips

• Couples who wake easily when a partner moves

• Combination sleepers who want softness with enough rebound to change positions

Who It’s Not For

• Strict stomach sleepers who need firmer support under the hips

• Sleepers of any weight who prefer a flat, lifted surface instead of a deep contour

• Anyone looking for firm edges or an especially buoyant feel

We used our mattress evaluation process to assess support, pressure relief, cooling, motion isolation, responsiveness, edge support, and durability. The process included side-, back-, and stomach-sleep sessions, partner-movement drills, repeated seated tests around the perimeter, and timed checks of how quickly the foams recovered after compression. We also compared the center and edge under the same load so the scores reflect daily use, not a brief showroom impression.

The softness was obvious as soon as we settled onto the AS5. We rated the feel 3 out of 10, and a 44-pound load sank 2.4 inches into the comfort layers. That depth gave side sleepers clear relief around the shoulders and hips. On our backs, the mattress still felt comfortable, but the pelvis sat lower than it does on a medium bed. Stomach sleeping was the weakest position because the extra sink made it harder to keep the midsection level.

The AS5 never felt as slow as its deep contour suggested. After the load was removed, the foam regained 90% of its height in 2.2 seconds, so rolling from the side to the back took little extra effort. That quick response was paired with even stronger motion control: after a 10-pound ball was dropped from 6 inches, noticeable vibration at the opposite side faded in 0.34 seconds. That matched our overnight experience, when getting in and out of bed rarely disturbed the other sleeper.

Cooling was good at first contact but more ordinary over time. From a 71°F starting point, the surface reached 78°F after 30 minutes of lying in one position. The cover helped prevent an immediate warm, sticky feel, but breathable sheets still made a difference during longer sessions. Edge support was acceptable for sleeping near the side, though the perimeter compressed enough while seated that we preferred moving several inches inward.

What we liked

• Deep, even cushioning around the shoulders and hips during side sleeping

• Very little motion transfer when a partner got in, got out, or changed positions

• Faster foam recovery than the deep contouring feel initially suggests

Who it is best for

• Side sleepers and shoppers who already know they enjoy a genuinely plush mattress

• Couples who value quiet movement and strong motion isolation

• Combination sleepers who want pressure relief without feeling held in one position

Where it falls short

• Stomach sleepers whose hips drop out of alignment on softer beds

• Back sleepers who need a flatter surface and stronger lift through the middle

• People who sit at the edge often and need a rigid perimeter

• Mattress type: All-foam

• Height: 14 inches

• Feel: Soft; 3/10 in our assessment

• Cover: Refresh Cooling cover; Amerisleep says it keeps the sleep surface an average of 7°F cooler over eight hours

• Layers: 3 inches of Bio-Pur memory foam, 2 inches of Active Flex foam, 2 inches of HIVE transition foam, and a 7-inch Bio-Core base

• Shipping: Free within the contiguous U.S.; compressed in a box and shipped by FedEx

• Trial: 100 nights, with returns available after the first 30 nights

• Warranty: 20-year limited warranty

• Fiberglass: Fiberglass-free

• Sizes: Twin, Twin XL, Full, Queen, King, California King, and Split King

• Pricing: Premium, with promotional pricing that changes regularly

Choose the AS5 if you sleep mostly on your side, enjoy a soft contour, and want partner movement to stay contained. Some back sleepers will also enjoy its deeper cradle, particularly if they dislike a flat, firm surface. Hot sleepers should keep expectations realistic: the cool-to-the-touch cover helps at first, but breathable bedding still matters because every support layer is foam.

Body weight alone should not decide the choice. Heavier side sleepers who want substantial cushioning may enjoy the AS5, while sleepers at the same weight who want stronger lift may not. Frequent stomach sleepers should move toward a medium-firm or firm mattress. Within Amerisleep’s range, the AS3 is the more balanced option. For stronger edges, more airflow, and a springier surface, the Saatva Classic is the clearer alternative.

Why choose the AS5

• Deeper pressure relief than most medium foam beds

• Excellent motion isolation without especially slow recovery

• A true soft feel for shoppers who find medium mattresses too firm

Alternatives to consider

The Amerisleep AS3 is the sensible step down in softness. Its medium feel keeps the body more level and suits a wider mix of sleep positions, though it does not cushion the shoulders and hips as deeply as the AS5.

The TEMPUR-ProAdapt Soft creates a denser, slower contour. It is the better choice for sleepers who enjoy the close, gradually settling feel associated with traditional memory foam. The AS5 responds faster and feels less restrictive when changing positions.

The Saatva Classic Plush Soft pairs a cushioned top with coils, so it feels springier, breathes more freely, and supports the perimeter better. It transfers more movement than the AS5, but it is a stronger fit for shoppers who want softness without the deep all-foam cradle.

• Use the full break-in period before deciding whether the softness works for your back-sleeping posture

• Place the mattress on a solid foundation or closely spaced slats to keep the support core level

• Rotate the mattress regularly to distribute wear across the shoulder and hip areas

• Choose a breathable protector; thick waterproof layers can hold heat near the surface

• Back sleepers can try a lower-loft pillow if the deep cradle raises the head too far

• Hot sleepers should use breathable sheets and avoid piling on dense bedding

• Sit a few inches in from the edge if the perimeter feels too compressible

• If stomach sleeping is your main position, choose a firmer mattress instead of trying to adapt the AS5

No. It has a deep foam contour, but Active Flex helps the surface recover more quickly than dense, slow-moving memory foam. Most combination sleepers should be able to roll over without pushing hard against the mattress.

Yes, especially when one partner wakes easily. Movement stayed close to its source during our tests, so getting into bed, getting out, and turning over caused little disruption on the other side.

Only if they already know they are comfortable on a soft mattress. The AS5 allows the pelvis to settle deeply, which can feel relaxing to some back sleepers but unsupported to others. A medium or medium-firm bed is the safer choice when extra lumbar lift is the priority.

It stays cooler at first contact than many all-foam beds, but it is not as breathable as a coil mattress. The cooling cover, breathable sheets, and a light protector make it comfortable for many sleepers, while people who overheat easily may prefer a hybrid.