Amerisleep colonial mattress

Amerisleep colonial mattress
Last Updated on December 7, 2022 by Stylowins

One of Amerisleep’s softest memory foam beds is the Amerisleep colonial mattress, also known as the Amerisleep AS4 mattress. AS4 has three layers of memory foam, which are softer and more breathable than the other three mattresses in the AS series.

Keep reading our comprehensive Amerisleep colonial mattress review to learn more about this bed.

What sets Amerisleep Colonial Mattress apart from the rest is:

  • Plant-based memory foam is used in the AS4’s top layer, which sleeps cooler than regular memory foam. The foam cell walls are blown out while the foam form remains intact during a process known as reticulation, making the top layer much more permeable.
  • Soft and breathable, the cover also aids in the user’s comfort by preventing overheating.
  • For those who sleep on their side or as a combination of both, Amerisleep suggests this mattress as the best option.

Amerisleep Colonial mattress: Firmness

The hardness of a mattress might be perceived differently by people with various body types and sizes. We put the AS4 through its paces with the help of a few extra eyes, and the results should help you get a better idea of what to expect from this mattress.

Traditional memory foam was immediately apparent when I first sank my hand into the mattress. Because the mattress’s comfort layer is thick and slow to respond to pressure, I was able to see my hand’s outline on top of it when I removed it. I was able to sink farther into the comfort layer when I applied greater pressure with both hands, but the comfort layer was so thick that I couldn’t feel the firm base.

The AS4 was given an average firmness rating of 6.5 out of 10, which is considered the industry standard for medium firmness. My initial impression of this mattress was that it was too soft for my liking, given that it had a thick layer of memory foam on top.

Amerisleep Colonial Mattress: Construction

Once you’ve experienced the Amerisleep AS4 from the comfort of your bed, it’s time to peep inside! We’ll examine the materials used in the construction of this bed and see how they affect its performance.


With its thin, airy cover, the Amerisleep colonial mattress should help keep you cool and comfortable while you sleep.

Layers of confines

  • Primary layer

Bio-Pur foam, a plant-based, open-celled foam that is both pressure-relieving and responsive, is the primary comfort layer of the Amerisleep colonial mattress. There are fewer VOCs in this foam because it is CertiPUR-US certified, making it more environmentally friendly than other foams.

  • Transition layer

A 1″ HIVE Transition layer sits beneath the Bio-Pur foam layer for further strength and durability. This layer is zoned to generate modest changes in firmness across the mattress. It’s a bit softer around the shoulders and hips (for more pressure relief) and a touch firmer and more support around the head, back, and legs.

  • Base layer

Bio-Core foam is used in the Amerisleep AS4’s foundation layer, which is 7 inches thick and is responsible for the mattress’ structure and support.

Height of Amerisleep colonial mattress

The Amerisleep colonial mattress is 12″ tall.

Amerisleep Colonial Mattress (AS4): Sleeping positions

Amerisleep Colonial Mattress (AS4): Sleeping positions

Side sleepers

Most side sleepers will find the AS4 comfortable because of its medium-soft texture and great pressure relief. Memory foam that is denser in this mattress can reduce pressure points and support a more upright posture. Side sleepers who weigh more than 230 pounds may find the AS4 to be too soft.

Back sleepers

The AS4 is likely to be excessively soft for the majority of back sleepers. If you weigh less than 130 pounds, the softer, more conforming feel of the mattress may not be a concern and maybe a welcome relief for your lower back.

Stomach sleepers

Only a small percentage of stomach sleepers are happy with the AS4. To keep them in the correct position, the mattress has an excessive amount of embrace and softness. Under 130-pound stomach sleepers who prefer a luxurious feel are the most likely to enjoy the AS4.

Amerisleep colonial Mattress: Performance

Hopefully, by now, you have a better understanding of the Amerisleep AS4’s construction and firmness. Let us take a look at a few key performance measures to wrap out this review. We put the Amerisleep AS4 through a battery of tests to see how well it controlled temperature, transferred motion and supported the mattress’s edges.

Transfer of motion

Motion transfer is kept to a minimum despite the Amerisleep AS4’s responsiveness. The Bio-Pur foam helps to isolate motion to one side of the mattress by absorbing it. People who share a bed with a partner may rejoice in this development.

Sleeping Hot or Cold

Bio-Pur foam in the Amerisleep AS4 mattress is open-celled, allowing more air to flow through the mattress, making it cooler to sleep on than an all-foam mattress. Even yet, since it’s made entirely of foam, there’s a chance that it could retain some heat.

Edge’s Technical Support

We found the edge support on the Amerisleep AS4 to be decent but not excellent. Choose a firmer Amerisleep mattress if edge support is a priority for you (such as the AS1 or AS2).


The Amerisleep AS4 emitted some off-gassing during various testings. Within a few days, this chemical odour will go away.


The fact that the manufacturer offers a warranty that is more than twice as long as the industry standard suggests that this mattress will last a long time.


Because it’s made entirely of foam, this mattress is surprisingly quiet. We shifted positions and moved about on the mattress, but we didn’t notice any noticeable noises.


Most people looking for a sex mattress want a bed that’s easy to move around in. Considering the Amerisleep AS4’s responsiveness, it may suit the bill. Couples won’t feel confined in this bed.

Amerisleep’s company policy for colonial mattress

Amerisleep AS4 mattresses come with fine print if you’re interested in purchasing one. Before you buy, we’ll go through the most critical policies you need to know.


The AS4 mattress is covered by a 20-year warranty from Amerisleep. Amerisleep will repair or replace your mattress if you find a manufacturing defect (i.e., a torn cover) in your mattress.

During the first ten years, you’re covered for the entire cost of replacement; however, after that, you’re only covered for a portion of the replacement expenses.

Sleep trial

The Amerisleep AS4 mattress comes with a 100-night sleep trial. This gives you plenty of time to try out your AS4 mattress and see if it’s a good fit for you before you commit to buying it. As soon as your AS4 mattress is delivered to your home, you get a 14-day trial period to test it out.

The Refund Policy

You can contact Amerisleep if you determine that the AS4 mattress is not a suitable fit for you during the 100-night trial period. Within the trial period, you have the option of getting a complete refund on your AS4 mattress.

Because mattresses need some time to adjust and break-in, Amerisleep asks consumers to wait 30 days before requesting a return or exchange.

Why you should buy Amerisleep colonial mattress? 

  1. If you want to sleep comfortably, this is the mattress for you. The open design of the plant-based Bio-Pur® material allows air to flow in and heat to flow out constantly, so you don’t sleep overheated.
  2. This is like lying on a soft piece of memory foam, but without getting stuck. You may move about on the mattress with ease thanks to the 4″ of soft foam.
  3. In terms of motion isolation, this mattress performs a fantastic job. You will not disrupt your partner’s sleep if you sleep with them, and they won’t disturb yours.

Why you should not buy Amerisleep colonial mattress?

  1. If you sleep on your back or stomach, this mattress will be too soft for you. Choose a firmer mattress from Amerisleep.
  2. When it comes to a $500 or less budget, the Amerisleep AS4 is out of reach.

Frequently Asked Questions

Does AS4 come with a free trial version?

Only a few Amerisleep retail locations let you test the mattress out before you buy it. Because of this, you may test the AS4 mattress for 100 nights risk-free in your own home during your trial period.

How to Clean the AS4 mattress?

Amerisleep mattresses come with a washable cover that makes it simple to deal with everyday messes like sweat and odours.

Conclusion about Amerisleep Colonial Mattress

Offering a medium-soft mattress, Amerisleep’s AS4 is the best choice. Side sleepers will appreciate this bed, as will those who have trouble cooling off at night. Because of its foam layering and permeable cover, it promotes airflow, alleviates discomfort, and improves circulation.

I hope that you will find this Amerisleep colonial mattress review useful. Prepare yourself for a good night’s rest!



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