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Twin XL Serta iComfort CF4000 Firm Mattress

Special Price $1,849.99 Regular Price $2,049.99
Twin XL Serta iComfort CF4000 Firm Mattress

The Serta iComfort CF4000 Firm Mattress features the latest in comfort technology including the new Carbon Fiber Memory Foam layer that works to direct heat away from the sleeper, allowing you to maintain your body's optimal sleeping temperature. This unique foam is a blend of carbon fiber memory foam and NASA-inspired Phase Change Material (PCM) that provides unmatched support and pressure relief. We rate this mattress an 8 on our comfort scale of 1-10 with 10 being firmest. This model features a Max Cool Cover in which aids in temperature regulation by allowing the sleeper to be in direct contact with the high-performance cooling fibers, creating a cooler sleeping surface that enables the individual to fall asleep faster and stay asleep longer. This mattress also features the UltraCold System™, which adds an extra carbon fiber memory foam layer for double the heat dissipation, giving the sleeper a more comfortable night's sleep. The Deep Reaction™ Max Memory Foam layer helps to maximize conformity for every individual and body type, producing consistent pressure relief for a rejuvenating night's sleep. This mattress has two cushion foam layers: the Serta® Support Foam and the Air Support™ Foam. These layers use air-cushion technology to support and comform to the curvature of the sleeper's body, relieving aches and pains comfortably and efficiently. The Serta® Foam Core provides this product with outstanding durability and support that drastically extends the life of the mattress, all while conforming to your body for all night comfort. This model is adjustable base compatible and comes with a 10-year warranty. Order your new Serta mattress today and pair it with any of our incredible bedding options!


Comfort Type

  • Firm
  • Comfort Scale 8

Comfort Layers

  • Max Cool Cover
  • UltraCold System™
  • Carbon Fiber Memory Foam
  • Deep Reaction™ Max Memory Foam
  • Serta® Support Foam
  • Air Support™ Foam

Base Layers

  • Serta® Foam Core

Box Spring (Optional)

  • Serta iComfort Foundation: Navy Blue Upholstery
  • Availible in 9" or 5" Height
  • Regular Box Spring 9"
  • Low Profile Box Spring 9"

Adjustable Base (Optional)


  • 10 Year Non-ProRated Warranty Against Manufacturer's Defects
  • No Flip, No Rotate

Made in:

  • USA


Size Height Width Length
Twin XL 13.5" 38" 80"
Queen 13.5" 60" 80"
King 13.5" 76" 80"
Cal King 13.5" 72" 84"

Serta iComfort

Serta iComfort Mattresses are the latest in innovation and comfort. Using high quality gel memory foam and advanced cooling technology with temperature regulation, these models offer superior comfort and support. The 1000 models offer a cooling cover while the 3000, and 4000 models feature even more temperature regulating technology with several layers of active cooling for a cool and comfortable night sleep. Rest easy knowing Serta uses only CertiPUR-US Certified Polyurethane Foam. Backed by a 10-year warranty, Serta iComfort is changing the way America sleeps.

More Information
UPC Code747935850330
mattress_thickness12" - 14"
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