The Amerisleep AS5 is a 14-inch all-foam mattress with a distinctly plush, pressure-relieving feel. It is the softest model in Amerisleep’s core foam lineup and is built for side sleepers who want deep contouring instead of a flat, firm surface. In our testing, it stood out for shoulder and hip cushioning, quiet motion control, and easier-than-expected repositioning for a soft foam bed. The trade-off is that the deeper cradle will not work for everyone, especially sleepers who want a firmer, more lifted feel.
Table of Contents
Product Overview
| Mattress | Overall Score | Pros | Cons | Ideal For |
|---|---|---|---|---|
| Amerisleep AS5 Mattress | 4.3/5 | Deep pressure relief, strong motion isolation, and better mobility than many plush foam beds | Too soft for many stomach sleepers, noticeable edge compression, premium pricing | Side sleepers, couples, and shoppers who want a softer foam feel |
Final Verdict
The AS5 does what a plush foam mattress should do: it cushions sharp pressure points, keeps partner movement from traveling far across the bed, and feels less restrictive than many slow-moving memory foam models. Its biggest compromise is support balance. The softer build can let the midsection settle more than some back and stomach sleepers will want, and the perimeter feels softer when you sit right on it.
Who It’s For
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Side sleepers who want deep contouring at the shoulders and hips
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Couples who are easily disturbed by movement
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Combination sleepers who like a soft surface but still want some rebound
Who It’s Not For
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Strict stomach sleepers
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Heavier sleepers who want a flatter, more lifted sleep surface
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Anyone shopping for a firm, buoyant feel
How We Tested It
We used the AS5 in our regular mattress testing process and tracked support, pressure relief, cooling, motion isolation, responsiveness, edge support, and durability. Our testing included side, back, and stomach sleep sessions; partner-movement drills; repeated sit tests along the perimeter; and daily check-ins on how quickly the foams recovered. That gave us a clearer picture of how the bed feels in real use rather than just during a quick showroom tryout.
Our Testing Experience
What stood out first in our testing was how quickly the top layers caught our shoulders and hips when we rolled onto our sides. The AS5 has a true plush feel, not just a lightly cushioned one. On back-sleeping nights, I could feel my pelvis settle deeper than it does on a medium mattress, so lower-back comfort depended on how much lift I wanted through the middle of my body. Marcus called it “dangerously comfortable,” but he also said he had to move off his stomach sooner because the softness let his hips drop too much. Jenna and Ethan both liked how quiet the bed felt when one person got up during the night. In shared-sleep testing, movement stayed muted instead of rippling across the whole surface.
What we liked
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Deep pressure relief around the shoulders and hips
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Low motion transfer in real shared-sleep testing
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A soft feel that still allows position changes without a struggle
Who it is best for
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Side sleepers and shoppers who already know they prefer a plush mattress
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Couples who wake up easily when a partner moves
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Combination sleepers who want softness without feeling completely trapped
Where it falls short
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Stomach sleepers who need firmer support under the hips
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Heavier sleepers who want a flatter, more elevated surface
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People who sit on the edge often and want a sturdier perimeter
Pros & Cons
| Pros | Cons |
|---|---|
| Excellent pressure relief for side sleeping | Too soft for many stomach sleepers |
| Strong motion isolation for couples | Can let the midsection sink for some back sleepers |
| More responsive than many plush foam beds | Edge compresses when perched |
| Comfortable for lounging and reading | Not a great fit for sleepers who want to stay fully on top of the bed |
| Well-rounded policies and setup convenience | Expensive compared with simpler soft foam beds |
Details
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Mattress type: All-foam
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Height: 14 inches
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Feel/firmness: Soft (3/10)
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Cover: Refresh Cooling cover designed to feel cool to the touch; Amerisleep says the surface stays about 7° cooler over an eight-hour night
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Comfort/support materials: Bio-Pur memory foam, Active Flex foam, HIVE transition layer, and Bio-Core base foam
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Targeted support concept: HIVE transition layer + Active Flex
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Shipping: Free shipping and returns within the contiguous U.S.; compressed in a box and typically shipped with FedEx
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Trial: 100 nights, with returns available after the first 30 nights
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Warranty: 20-year limited warranty
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Fiberglass: Fiberglass-free
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Availability: Twin, Twin XL, Full, Queen, King, Cal King, Split King
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Pricing: Premium pricing, with sale pricing changing regularly
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.1/5 | The base keeps the bed from collapsing, but the plush top lets some sleepers sink more than they may want |
| Cooling | 4.0/5 | The cover feels cool at first touch, though the foam build can still warm up over long nights |
| Pressure Relief | 4.8/5 | Excellent cushioning for shoulders and hips, especially while side sleeping |
| Motion Isolation | 4.6/5 | Partner movement stayed localized in our get-in, get-out, and repositioning tests |
| Responsiveness | 4.2/5 | Still a plush hug, but easier to move on than many slow-rebound foam beds |
| Edge Support | 4.1/5 | Usable for sleeping near the edge, but softer when sitting right on the perimeter |
| Durability | 4.3/5 | Solid policy coverage and a sturdy support core, though the plush comfort feel still needs regular care |
| Overall | 4.3/5 | A strong pick for plush comfort with clear trade-offs for sleepers who need more lift |
Choosing Guide
Choose the AS5 if you know you like a soft, contouring surface, sleep on your side often, and want movement from a partner to stay contained. It can also work for some back sleepers who enjoy a deeper cradle instead of a flatter, more supportive feel. If you sleep hot, the cool-to-the-touch cover helps at the surface, but breathable bedding still matters because this is an all-foam build. If you are heavier or spend a lot of time on your stomach, a more supportive medium feel will usually be the safer match.
If you want a more balanced feel within the same brand, the Amerisleep AS3 is the more natural step. If you want more lift, airflow, and stronger edge stability, the Saatva Classic in Luxury Firm is the more traditional alternative.
Limitations
The AS5’s main trade-off is simple: the same plush comfort that makes it appealing for side sleeping can become too much softness for other sleep styles. If your hips tend to sink, you may notice a mild dip through the middle of the bed on your back or stomach. The edge is usable, but it compresses more than a firmer or coil-based design when you sit on it. And if you strongly prefer bounce or a lifted, on-top feel, this model will probably feel too enveloping.
Vs. Alternatives
Why choose this model
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Deep pressure relief without the trapped feeling that some plush foam beds create
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Quiet, couple-friendly motion control
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A softer feel that is still fairly easy to move across
Alternatives to consider
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Tempur-Pedic TEMPUR-ProAdapt Soft for a denser, slower, more classic memory foam contour
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Saatva Classic Plush Soft for a softer surface with more springy lift and airflow
Pro Tips
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Give it a real break-in period before you decide whether the alignment works for your back-sleeping posture
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Use a solid foundation or closely spaced slats so the plush feel does not turn sloppy over time
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Rotate the mattress regularly to help distribute wear more evenly through the shoulder and hip zones
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Use a breathable protector; thick, rubbery covers can hold heat at the surface
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If you are a back sleeper, try a slightly lower-loft pillow if the deeper cradle makes your pelvis feel like it is dropping too far
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For hot sleepers, pair it with crisp, breathable bedding and keep the top layers as open as possible
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If you sit on the edge every day, sit slightly inboard to reduce the feeling of compression
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If stomach sleeping is non-negotiable, treat the AS5 as an occasional-position bed rather than an all-night stomach-sleeping solution
FAQs
Does the Amerisleep AS5 Mattress feel “stuck” like classic memory foam?
Not to the same degree. It still has a plush hug, but in our testing the responsive layer made rolling and repositioning easier than on many slow-moving foam beds.
Is it good for couples?
Yes. Motion stayed localized in our shared-sleep tests, so one person getting in, out, or turning over was less disruptive than on bouncier mattresses.
Will it work for back sleepers with mild lower-back tightness?
It can, but only if you already like a deeper cradle. If your hips sink too much and your lower back starts to feel tugged, a medium mattress is usually the better call.
How does it do for hot sleepers?
The surface starts cooler than many all-foam beds, but it is still foam. Breathable sheets and a lighter protector make a noticeable difference if you tend to sleep warm.
