Amerisleep AS3 Mattress Review

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The Amerisleep AS3 is one of the most popular models by Amerisleep. This mattress has a medium feel that contours very well but still offers enough support for stomach and back sleepers. What sets Amerisleep mattresses apart from most of the competition is that all their models come with Celliant technology built in. Celliant is a proprietary mix of 13 thermo-reactive minerals that are embedded into polyester fibers. This fiber then absorbs and re-emits infrared light energy emitted by your body. This can be done through multiple layers of fabric. The benefits of this technology is increased circulation which leads to better sleep and recovery. Let’s look at the mattress in detail in this Amerisleep AS3 mattress review.

Overview of the Amerisleep AS3

After you place your order, your Amerisleep mattress will arrive at your door in a box like the one below. No need to wait for a delivery company.

Here’s a pic of the mattress roll packed inside the box.

Amerisleep mattress in box

Here’s the mattress on the bed.

Amerisleep Mattress on Bed

Finally, this is what it looks like a few minutes after opening it. As you can see it is already at full shape.

Amerisleep AS3Here’s a video overview of the AS3. This mattress recovers quickly out of the box and had little off-gassing smell. This mattress comes with a standard 100-night trial with free shipping and free returns.

Construction of the Amerisleep AS3

Below are the construction details as listed on their website.


Celliant® is an advanced fabric made with 13 thermoreactive minerals that helps improve the performance of the mattress.


Our Bio-Pur™ foam is five times more breathable than traditional memory foam, because of it’s advanced open-cell structure. It wicks away heat while you sleep and can help keep you cool and comfortable.


The affinity transition layer is soft and responsive. It reacts to your body position to evenly support your weight and can help relieve pressure points, so it feels as if you’re weightlessly resting on a cloud.


Our Bio-Core™ foam support layer won’t sag even after decades of use. And, like our Bio-Pur™ foam, it’s partially made from plants instead of petroleum so it’s eco-friendly.

How Much does the Amerisleep Mattress Cost?

Below are the prices of the mattress as of this writing.

SizeRetail pricePrice with disscount
Twin XL$1149$949
California King$1699$1499
Split King$2098$1898

My Amerisleep AS3 Findings

amerisleep as3 sinkage

Here’s another view from the side of the mattress.

as3 side

It’s a minor detail but in my mind, it matters. The zipper system on this mattress is high quality. It’s easy to unzip and the zipper is actually in the middle so you don’t have to lift up the mattress to access it.

as3 zipper

Here’s a picture of the layers of the mattress. Below the blue cover that you see above, there is a fire sock. I removed part of the fire sock to show you these layers. Again, these are cut clean. Some mattresses I have opened are warped towards the corners and don’t fully recover due to the use of too much glue.

Amerisleep uses a plant-based foam in their mattresses to lessen the environmental impact. I’m not sure the exact ratio but it is certainly nice to learn that they are trying to move the needle in the right direction. The foam is an open cell foam which means more breathability too. This mattress feels amazing and is breathable for an all foam mattress.

as3 layers

Here’s a clip showing motion transfer on the mattress which is basically none because it is a foam mattress.

Here’s a video showing the inside layers of the AS3 and how each reacts. The top layer is a little slower to recover because it provides the most contouring and pressure relief. The recovery is faster than most dense foam mattresses but not quite as fast of a recovery as something like an Avena foam. Basically, you won’t get that stuck feeling and the mattress is really easy to move around on.

My Amerisleep AS3 Recommendation

Amerisleep has a relatively long history in the online mattress space. The fact that they have retail stores in Arizona, Oregon, Texas and Colorado is a good indicator that they stand by their product and are confident that after you try their mattress you will be impressed. With Amerisleep you get a company with thousands of positive reviews, a long company history (at least in online mattress brand terms), the ability to try before you buy and all the benefits of Celliant fiber.

I particularly recommend the AS3 to sleepers that change positions at night. This is a very versatile mattress and should appeal to all sleepers.

Learn more about the Amerisleep AS3

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