Queen Serta iComfort Hybrid CF4000 14 Inch Firm Mattress

Queen Serta iComfort Hybrid CF4000 14 Inch Firm Mattress

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$84.77/mo suggested payments with 48 months special financing.
$84.77/mo suggested payments with 48 months special financing.
$68.73/mo suggested payments with 48 months special financing.
$79.42/mo suggested payments with 36 months special financing.
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Queen Serta iComfort Hybrid CF4000 14 Inch Firm Mattress
Queen Serta iComfort Hybrid CF4000 14 Inch Firm Mattress

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Comfort This describes how a mattress feels. The Comfort Scale rating is based on how the cushioning materials conform to the body's shape. The higher the number the softer the mattress.

Quilt - Top of Mattress This is the outside cover on the top of the mattress. It covers and protects the comfort and support layers inside.

Comfort - Padding Layers This provides a cushioning layer between you and the support system in the bed. Different kinds of padding will provide different levels of comfort.

Correct Back Support System This is a general term used to describe how a mattress distributes and stabilizes body weight and maintains proper spinal alignment. Different materials provide different levels of support.

Box Spring - Foundation (optional)

Warranty This tells you what kind of warranty you have and how long it will last. A typical warranty lasts about 10 years.

Made In This tells you where your mattress is manufactured.

  • United States


  • MATT-930402, STD-929404, LP-929398, FRAME-928794

Expert Review

My Take on the iComfort Hybrid CF4000 hybrid Firm

by Jed Harrington

The iComfort Hybrid CF4000 Firm is the top of the line and spares no expense when it comes to cutting edge technology. If you like a firmer feel and want the best of the best, this is the way to go.

Top of the line Cooling

The CF4000 Firm is all about promoting a cooler sleep environment for deep REM sleep. The Max Cold Cover, Ultra Cold System, and Carbon Fiber Memory Foam all provide cooling so powerful, you can feel it working through jeans. This is great because cooler sleep environments do a great job promoting better sleep.

Amazing new Comfort Technlogy

Carbon Fiber Memory Foam and Air Support Foam combine to produce a feel that's both comfortable and supportive. Exclusive to Serta, these components help reduce pressure points for less tossing and turning, and create a cooler sleep environment. Air Support Foam uniquely contours to your every curve and pushes back against the body for a more supportive feel.

Top of the Line Coil System

The 1025 iComfort Hybrid Support System with Best Edge Foam Encasement provides solid support while contouring to the curves of your body. This system helps isolate motion transfer when movement occurs for undisturbed sleep, and is adjustable base friendly. The Best Edge Foam Encasement keeps comfort consistent, even when sleeping to the edge.

If you like firm, you'll love this.

The comfort scale rating of 3 means you can expect a very firm overall comfort level, but with enough padding to properly contour to your lower back.

Undisturbed Sleep

The CF4000 Firm produces a nearly motionless sleep environment, which means if movement takes place on one side, you'll feel less on your side.

The Best Firm Mattress in The Line

If you're looking for the best firm mattress in the iComfort Collection, this is the way to go. The CF4000 Firm is packed full of great components that promote cool, comfortable, and supportive sleep. The unique Air Support Foam system really does a good job working with the coil system to great a high end, top of the line feel.


King14"76"80"153 lbs.
Cal King14"72"84"152 lbs.
Queen14"60"80"119 lbs.
Twin XL14"38"80"74 lbs.
SizeCoil Count
Cal King1316
Twin XL638

Works With All Bed Types

Box Spring
Box Spring
Traditional Frames
Traditional Frames
Adjustable Bases
Adjustable Bases

Your mattress purchase is fully compatible with all modern support systems, including adjustable base, platform bed, box spring/foundation, even the floor!

Customer Reviews

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  • Sleep cooler through the night with DualCool Technology
  • Feel supported with 900 Series Pocketed Coils
  • Consistent comfort with the BeautyEdge Foam Encased Edge