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Amerisleep AS4 Mattress Reviews - Honest Mattress Reviews

The Amerisleep AS4 is a medium-soft combination foam mattress that blends three layers of foam for a comfortable, cushioned, and pressure relief rest. The AS4 model (formerly named as Colonial) is designed to be perfect for side and combination sleepers.

Amerisleep AS4 Mattress Sleep Score

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Amerisleep AS4 Mattress Reviews
Sleepare's Ultimate score

This is the average score of sleepare's pro score and sleepare's customers reviews analyses.

Trial Period
Trial Period

You can try this mattress at home for 100 nights.


This product offers 20 year warranty.


Free home delivery anywhere in the US.



About AmeriSleep

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.

Amerisleep AS4 Mattress Benefits Overview

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 Amerisleep’s 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.

Amerisleep AS4 Mattress Features Overview

  • Eco-Friendliness
  • Memory Foam without feeling stuck
  • Body Contouring
  • Medium-softness
  • Memory foam layer for enhanced comfort
  • Hypoallergenic and dust mite resistance
  • Cool and breathable feel
  • Edge Support
  • Available in various sizes from Twin to Split King
  • Pressure relief and ease of pain
  • Bio-Pur and Affinity with SMT comfort layers
  • High-performance Celliant cover
  • Motion isolation
  • Comfortable regardless of position
  • Easy to maintain and lift
  • Sleeps Cool

Amerisleep AS4 Mattress 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.

Amerisleep AS4 Mattress

Who Should Buy Amerisleep AS4 Mattress?

  • If you are an athlete, the Celliant Technology is thought to improve your recovery time.
  • If you love the feel of layered foam, the Amerisleep AS4 combines spring and memory foam properties to this combination foam mattress.
  • If you are a side sleeper, AS4 can be an ideal candidate.
  • If you are looking for a pressure relieving sleep, the support core helps to relieve pressure.

Who Shouldn't Buy Amerisleep AS4 Mattress?

  • If you are looking for mattress with different firmness levels.
  • If you are looking for a low/medium budget option.
  • If you want more spring in your mattress, amerisleep AS4 might make you notice a significant bounce

Review/Introductory Videos

AmeriSleep Mattress Reviews
Pricing information for Amerisleep AS4 Mattress is provide by the company or retrieved from publicly accessible pricing information. The exact cost to purchase Amerisleep AS4 Mattress must be discussed with AmeriSleep directly.
  • Total Reviews 704
  • Old Reviews 0
  • Unverified 704
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Here is the summary of 704 reviews written on Amerisleep AS4 Mattress

Amerisleep AS4 Mattress 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 preferences. This brand has built a positive name in the market and for good reason too. Leave sleepare and read full review

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 mattress, which makes the mattress actually feel bigger (you can sleep closer to the edge comfortably). Leave sleepare and read full review

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 levels, so its just a matter of finding the right one that fits your preference. Leave sleepare and read full review

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 bio-foams that are more eco-friendly than the traditional synthetic-based memory foam material. Leave sleepare and read full review
LATEST PICTURES BY Amerisleep AS4 Mattress


Customers Ultimately Bought
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Comfort level
Medium soft 4/10
  • Extra Soft
  • Soft
  • Medium
  • Plush Firm
  • Firm

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"
Other Specification


Amerisleep AS4 Mattress
  • 4" Memory foam -
  • 1" Egg-crate foam
  • 7" High density polyfoam - dark green
Amerisleep AS4 Mattress reviews

Amerisleep AS4 Mattress

704 reviews
80 people use this
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This is the pricing breakdown for Amerisleep AS4 Mattress. Amerisleep AS4 Mattress is ranked #0 among Foam Mattress, Memory Foam Mattress. The Amerisleep AS4 Mattress is followed by Leesa and Tulo, ranked #1 and #2, respectively.

This popular bed is available in different sizes, with variation in prices. The Twin sized Amerisleep AS4 Mattress is priced $1400whereas a Queen sized Amerisleep AS4 Mattress is available for $1700. Per the market statistics, a similar Queen size mattress by Brooklyn Bedding brand, from the Hybrid Mattress category is priced $1800, while a Queen Leesa, belonging to the same category, costs $995. Thus, Amerisleep AS4 Mattress is one of the most affordable sleep surfaces.

Amerisleep AS4 Mattress Pricing