Serta iComfort CF4000 Hybrid Plush Mattress Review

Updated January 9, 2023

The iComfort CF4000 Hybrid Plush mattress is the top-of-the-line soft mattress in the new iComfort collection by Serta.  We're still waiting to get our hands on these new mattresses so we can perform all of our tests.  When we do we'll update this review with all the details on features, highlights, and our expert opinion.  For now, you can continue reading our review to see what information we do have so far:

Comfort Scale Rating

The CF4000 Hybrid Plush mattress is a soft comfort that we rate 7 on our 10 point Comfort Scale (a 1 is hard, 10 is softest). We expect that this mattress will score at a 7 based on previous models that were similar to this one.  A comfort level like this will appeal to people who prefer a softer mattress to sleep on. There is a firm option if you do not like plush.

Pros & Cons

PROS	CONS
The hybrid style of mattress is very popular, and offers great support and contouring Three snowflakes mean multiple layers of cooling technology Several premium features included Serta is a trusted brand	A softer-feeling mattress might be uncomfortable for anyone who prefers a firmer-feeling bed   Offgassing can occur with memory foam making the bed smell odd for a short while

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Pressure Test Results

We'll pressure test the iComfort CF4000 Hybrid Plush mattress using small, average, and large body size people lying on their side and back sleeping positions to see what kind of support and pressure relief you can expect. (Learn how we test.)  

We expect this mattress to perform quite well during testing based on previous Serta iComfort models with similar builds.  It's safe to assume that back sleepers will find this bed very comfortable and supportive with really good pressure relief.

Once we do complete the pressure testing we'll update the results here.  For now, you can see a sample of what test results will look like from a mattress similar to the CF4000 Hybrid Plush.  Come back soon to check for updates!

Details on the Layers of the CF4000 Hybrid Plush

1. 1. 1025 iComfort Hybrid Support™ System

   In this advanced innerspring system, individually wrapped coils work independently to conform to every curve of your body and provide durable support. 

2. 2. Air Support™ Foam 

   Serta's exclusive air-cushion technology in this foam layer moves with your body and smartly contours around it to help soothe pressure points and alleviate aches and pains.

3. 3. EverCool® Fuze Memory Foam

   A layer of Serta's EverCool^® Fuze Memory Foam for cradling comfort helps relieve pressure points with a soft, yet supportive feel. This foam is another layer of cooling technology to remove excess heat away from your body.

4. 4. Carbon Fiber Memory Foam

   A first-of-its-kind memory foam layer infused with carbon fiber for cooling as well as strength and resiliency. This system channels heat away from your body and it provides exceptional strength for back and neck support.

5. 5. Max Cold™ Cover

   This cover gives you an instant cool-to-the-touch sensation. It's made from high-performance fibers and aids in getting you to sleep faster.

Warranty

The iComfort CF4000 Hybrid Plush mattress comes with a 10-year warranty against factory defects.

Serta iComfort CF4000 Hybrid Plush Specifications:

Product Name	iComfort CF4000 Hybrid Plush
Price	Check Price
Brand	Serta
Mattress Comfort	Hybrid Plush
Comfort Scale Number	7
Coil Count	900
Coil Gauge	15.5
Height	14"
Comfort Padding Layers	Carbon Fiber Memory Foam Air Support™ Foam
Warranty	10-year warranty against manufacturer's defects No Flip, No Rotate Non-prorated
Back Support System	EverCool® Supreme Memory Foam Serta Foam Core
Quilt Top of Mattress	Max Cool Cover UltraCold System™
Edge Support	BestEdge® Foam Encasement
Recommended For Side Sleepers Who Weigh	coming soon
Recommended For Back Sleepers Who Weigh	coming soon

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About the Author, Dave Higgins, Mattress Expert

Dave has worked in the furniture business, focusing on mattresses, for several years. His focus on mattress industry trends and developments has led to a deeper understanding of how people sleep and how they perceive comfort.