Amerisleep AS3 Mattress Review

The Amerisleep AS3 mattress blends the softness you want with the support you need. It utilizes eco-friendly, heat-wicking materials to keep you sleeping cool and comfortable. The advanced Hive® transition layer works to keep you perfectly aligned. Pressure is firmer on your back and softer on shoulders and hips) so you wake refreshed and pain-free. Try the AS3 risk-free with Amerisleep's 100-night trial, today!

Get The AS3 if...

• You're a hot sleeper. Plant based Bio-Pur® material layer features an open-cell design that allows more air to circulate than traditional foam beds.
• You need targeted support. The AS3's Hive® transition layer is zoned in 5 areas to provide firmer support for your head, back and legs, and softer support for your shoulders and hips so you stay aligned all night long.
• You want an all-foam mattress. The AS3 is constructed with three layers of dense foam that cradle and adapt to your body.

Skip The AS3 if...

• You sleep predominately on your stomach. Stomach sleepers tend to need a more firmer base and feel to prevent hips sinking too far into the mattress (throwing you out of alignment). You'd sleep much better on the Amerisleep AS1 model.
• You like the traditional feel of innersprings. The AS3 is an all-foam mattress, but if you want the extra support and lift of coils, try the AS3 Hybrid model.
• You aren't a fan of the mattress-in-a-box concept. Amerisleep ships their mattresses rolled and compressed in a box; it expands once opened.

Pros

• Backed by a 20-year warranty.
• Eco-friendly. They use plant-based and eco-friendly materials certified by CertiPUR-US®.
• Amerisleep mattresses are proudly made in America.

Cons

• A bit pricey, definitely an investment
• The all-foam design may not be suitable for those who need more support.

Firmness/Feel/Comfort

The AS3 is constructed to have a medium feel (5.5/10 on the firmness scale) and is the most popular comfort level across all sleeping positions.

Construction Key Points

• The AS3 is 12" tall.
• Cover. Ultra breathable, it's made from a blend of Celliant fabric, spandex, and polyester that feels soft and stretchy to the touch. It helps your body recover by retaining body heat and converting it into infrared energy, which then gets transmitted back to your body to help alleviate sore muscles and improve circulation.
• Top Layer. Plant based Bio-Pur® material keeps you cool all night. It features an open-cell design that allows more air to escape than traditional foam. It contours to your body to relieve pressure points and bounces back fast, so you won’t feel stuck.
• Transition Layer. Hive® layer provides targeted support and pressure relief so you can sleep in perfect alignment. It gives your head, back, and legs more support and your shoulders and hips more cushion.
• Base Layer. Bio-Core® base layer gives you durable support that lasts for decades. It won’t sag or develop soft spots over time.

Support & Motion Isolation

Because of the all-foam design, the AS3 does an excellent job at eliminating motion transfer.

What Makes The Amerisleep AS3 Stand Out?

1. This is an excellent choice if you want to sleep cool. The plant-based Bio-Pur® material's open design creates multiple air channels that continually allow air to flow in, and heat to flow out, so you don't sleep hot.
2. You get that plush memory foam feel without getting stuck. The 4" of soft foam responds very quickly, making it easy to move around on the mattress.
3. If you sleep with a partner, this mattress does a great job at isolating motion. You won't disturb their sleep with your movements and vice versa.

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The Amerisleep AS3 is a fantastic option if you want a soft, yet supportive mattress. It's also surprisingly comfortable. You can get 30% off the AS3, today!

Where can I find a great, affordable mattress (in 2025)?‍

If you're searching for an affordable mattress that offers a wide range of comfort and pressure relief, we've compiled a list of mattresses for you to consider:

1. Saatva Mattress - fantastic for all sleep positions, and is rated our Best Mattress of 2025.
2. Puffy - feels like you're sleeping on a cool cloud (at a good price).
3. Ghostbed - beautiful, plush cover w/ aerated latex and healthy spinal alignment.
4. Winkbeds - 3-stage back relief with free shipping and returns.

Read our short, well-researched 10 Best Mattresses of 2025, here. Our ultimate goal is to help you pick your perfect mattress online, today!