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What is Amerisleep AS4 Mattress?

The Amerisleep AS4 is the next softest choice offered by the company. A trendy triple layered combination foam mattress that puts forward a better airflow, comfortable, supportive, and pressure relief rest. The AS4 from the Amerisleep Brand is considered as a soft and luxury mattress. The revitalizing rest with technologically advanced, American-made, eco-friendly mattresses is what makes this brand one of its kind. The Amerisleep motto is Better Sleep for a Better Tomorrow.

Amerisleep is a US-based company, having four brick and mortar showrooms in Arizona. All mattresses are designed and assembled in the US. Established in 2007, their intention to perfection and their focus on creating different mattress variants for different sleeping styles has attracted lots of customers. Amerisleep offers standard free curbside shipping to anywhere in the contiguous USA, a 20-year warranty, a 100 night trial period and 100% full refund on their products. If your Amerisleep mattress is not what you were looking for, the company offers a hassle-free return process. Moreover, Amerisleep does their best to donate any returned mattresses to local charities.

The Amerisleep AS4 mattress formerly known as colonial along with a variety of other Amerisleep products is ideal for customers looking for conforming, temperature neutral and elegantly designed combination foam mattresses.

Overview of Benefits

The Amerisleep brand of designers and engineers carefully source and select materials for unique performance characteristics. The brand is continually improving the quality of its mattresses based on the latest technology and customer feedback. Customer satisfaction is a key to their success, an important factor in considering your mattress buying options. The medium-soft Amerisleep AS4 is an all foam mattress constructed of 3 different layers, totaling 12 inches in height.

The amalgamation of the memory foam comfort layer and the poly foam provides a right mix of pressure relief and support. The sheets are a combination of Memory Foam, Poly Foam, and High-Density Poly Foam Base. Each layer offers a specific feature for body contouring, enhanced comfort, pressure relief sleep and deep compression support.

For example, the top layer comprises of Amerisleeps proprietary BioPur+, their most advanced memory foam. A very active, almost prompt bounceback to its uncompressed form sets this foam apart. Active represents a lack of stifling or being stuck, sometimes a feature of conventional foams.

Amerisleep Colonial reviews average 4.6 / 5 stars from over 130 buyers. The high-density poly foam, this layer is firm to support the comfort, and transition layers above as well as provide in-depth compression support to the sleeper on top of the mattress. The base not only gives the AS4 its shape but also provides the mattress with some durability. Along with this, the breathable cover and convoluted transition layer combine to provide more airflow through the bed for improved temperature regulation.

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Overview of Features

Technology Details

The comfort layer of the AS4 is constructed of a 4-inch layer of memory foam. This layer allows the sleeper to sink in for pressure relief and provides the classic memory foam feel of contouring to the body. Amerisleep uses a memory foam with an open-celled structure in all of their mattresses to support in cooling of the mattress as memory foam can be perceived to ambush too much heat at times.

Below the comfort layer is what Amerisleep calls the Affinity layer. It consists of a 1-inch layer of poly foam that has a perplexing (eggshell) design. This pattern develops space to allow air to flow through the product for enhanced temperature regulation and cooling of the mattress.

The base of the Amerisleep AS4 is made of 7 inches of high-density poly foam. This layer is firm to operate as the foundation of the product and provides deep compression support to the sleeper. The base also gives the mattress with its shape and some stability to the overall formation.

The top layer cover of the Amerisleep AS4 mattress is constructed of various materials including Celliant, a plant-blend material utilized to make the fabric cover more breathable. The benefit of Celliant is unique to mattress covers and is blended with polyester and spandex.

Who Should Buy Amerisleep AS4 Mattress?

Who Shouldn't Buy Amerisleep AS4 Mattress?

Read Amerisleep AS4 Mattress Comparison

Expert Reviews

Get Best Mattress - Chris Young
March 19, 2018

Amerisleep has dedicated technology to creating high quality mattresses with key differences with the aim of satisfying different consumer needs and...
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Mattress Clarity - Joe Auer
March 20, 2018

high quality memory foam mattress, Amerisleep performs exceedingly well. Additionally, the Amerisleep has pretty good edge support for a foam...
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Sleep Advisor - Mark Reddick
March 20, 2018

Amerisleep line is not the cheapest on the market, but its still one of the best value products you can find. They have the most options and firmness...
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Slumber Search - Chris Moberg
April 20, 2018

Amerisleep offers a line of high-end memory foam mattresses for an environmentally conscious consumer. Each mattress is made with a blent of...
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Amerisleep AS4 Mattress Specification

Comfort level

Medium soft 4/10

Height12 "
Weight94 pounds
Warranty20 years
Trial period100 days
Country of originUSA
Free deliveryYes
Mattress build3 layers foam
Fits adjustable bedYes
Quilted foamNo


Cali King72" x 84"
Full54" x 75"
King76" x 80"
Queen60" x 80"
Split King
Twin39" x 75"
Twin XL39" x 80"
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Queen Size


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