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Amerisleep AS4

Owners Rating
8 ratings

Product description from Amerisleep:

The AS4 is our medium-soft mattress. It’s great for side sleepers, and anyone who likes more cushioning while they’re in bed. We combine our proprietary, cooling Bio-Pur foam and Affinity with SMT comfort foam layers to create a soft but responsive feel that relieves pressure points and makes you feel like you’re floating. Plus the high-performance Celliant cover is made with thermo-reactive yarn to safely turn body heat into infrared.

Celliant® is an advanced fabric made with 13 thermo-reactive 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 layer with Surface Modification Technology (SMT) is our ergonomic transition foam. It has “zones” that provide extra pressure relief in key areas like the shoulders and lower back, along with precision-cut channels that carry away even more heat and moisture. It’s enough to make you feel like 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.

* In 2017 Amerisleep changed their model names, at which time the Amerisleep AS4 became the new name for the mattress that was previously called the Amerisleep Colonial.

Bottom Line Is this a good bed for you?

Fit: Recommended for people who...

Prefer to sleep on their side
Prefer to sleep on their back
Prefer a lot of softness

Function: Rated for its...

Motion Isolation
Pressure Relief

Features: Contains...

  • Foam
  • Memory Foam
See specs for the AS4 »
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Reviews AS4

The Amerisleep AS4 mattress model is recommended by 38% of owners on GoodBed (based on 8 ratings).

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Model Features AS4

Support Core:
Comfort Level:
Surface Type:


Special Characteristics:


Overall Build
  • No-Flip
  • Works with an adjustable base
  • Mattress Thickness: 12"
Which mattress from Amerisleep is best for you?

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About this Model AS4

Active (released 2017) (edit this)
Model Name:

Additional Information AS4


The AS4 is an unquilted foam core medium-soft mattress model released in 2017 that is manufactured by Amerisleep.

Editor's Note(s):

  • The Amerisleep AS4 was previously known as the Amerisleep Colonial.


Have an update or correction to our information about Amerisleep AS4? If so, please take a moment to suggest an edit.

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