- Sleep cooler through the night with DualCool Technology
- Feel supported with 900 Series Pocketed Coils
- Consistent comfort with the BeautyEdge Foam Encased Edge
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Use our pressure test result to see if this is the right mattress for you!
Create a cozy oasis for rest and relaxation with the Serta iComfort CF4000 quilted hybrid firm mattress. Combining traditional innerspring support with the modern conformity of foam, this California king-size mattress boasts a 4 comfort scale rating for its ability to conform to your body without feeling too soft.
Slip into a cool bed every night thanks to the Max Cold top layer of the CF4000. The high-performance fibers keep you at the right temperature for sleeping.Stay Cool All Night
While the Max Cold cover helps you get to sleep, the UltraCold system helps you stay asleep. This premium cooling technology pulls excess heat away from you as you sleep on the Serta iComfort CF4000 mattress.Heat-Wicking Carbon Fibers
Enjoy heat-wicking comfort and excellent neck and back support with this California king-size mattress. The Serta iComfort CF4000 includes carbon fiber memory foam enhancements for added coziness.Like Sleeping On Air
Rely on the Serta iComfort CF4000 to relieve pressure points with its exclusive Air Cushion foam layer. This comfort layer contours around your frame to aid in relieving everyday aches and pains.Individually Wrapped Coils Support Gently
Depend on this quilted hybrid firm mattress for best-in-class support. Individually wrapped innersprings that move independently provide a personalized feel, while carbon fiber-enhanced memory foam and a layer of Air Support foam help the Serta iComfort CF4000 mattress strike the ideal balance between firm and hard.Is The CF4000 Firm Cal King Right For You?
If you're a back or stomach sleeper and want an excellent mattress for the price, the Serta iComfort CF4000 has you covered. Cooling features and a thoughtful design that's supportive yet comfortable ensure you get a great night's sleep every night, while the spacious California king sizing affords you lots of room to stretch out whether you're reading or watching TV or bedding down for the evening.
|Cal King||14"||72"||84"||120 lbs.|
|Twin XL||14"||38"||80"||50 lbs.|
Your mattress purchase is fully compatible with all modern support systems, including adjustable base, platform bed, box spring/foundation, even the floor!
We test and measure body pressure on each mattress using sophisticated technology. We then provide you a personal recommendation.Learn More »
Stay tuned for another helpful analysis of how this bed feels. We provide all kinds of media to help you pick the best mattress.
|Delivery Options & Timing:|
Our contactless delivery helps keep you and delivery personnel safe!
Leave the heavy lifting to us with our white glove service!
You'll be contacted by our carrier to schedule delivery. Someone must be home to accept delivery. Weekend and evening deliveries may be available for a nominal fee. Call us at 1-800-455-1052 for availability and pricing. Please note that furniture and bedding deliver separately from your mattress order.
*Please check your zip code delivery estimate on individual mattress model pages for a proper estimate. Remote locations can experience longer lead times.
California Residents: This product complies with state regulations including mattress removal. Learn more