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California King Size HB300S iComfort Smart Support Mattress--Cool, Comfortable Support Jump into bed and experience a full night of supportive sleep when you lay down on the Serta California King Size HB300S Smart Support Mattress . This mattress was designed with dual layers of EverFeel Triple Effects Gel Memory Foam and Cool Action Gel Memory Foam to support and cradle your body all night long for consistent support and comfort. With the additional support of the SmartSupport Memory Coil System and 2 layer Serta Pillowsoft Foam, you can rediscover deep, restful sleep. TheEverTemp technology helps aid in temperature regulation for a more comfortable sleep. Get in bed and stretch out on the Best Edge Foam Encasement that allows for an edge-to-edge sleep surface experience.
  • The Cool Action Dual Effects material reduces pressure and helps stop tossing and turning.
  • MicroSupport gel beads give support to the areas that need it most.
  • Duet Coil Support System reacts directly to your body weight to help ensure a proper sleeping posture.
  • MicroCool+ gel and open cell structure disperse body heat.

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Comfort Plush
Daybed Compatible Not daybed compatible
Mattress Width 72
Overall Dimensions L 83.5 in. x W 72 in. x H 13.5 in.
Mattress Height 13.5
Mattress Weight (lbs.) 100
Foundation Profile Standard Split, Standard, Adjustable base, Low Profile Split, Low profile
Mattress Cover Material Cotton-Polyester
Materials & Finishes:
Mattress Length (in.) 83.5
Coil Count 1232
Support System:
Construction Hybrid
Color Off white
Size California King
Product Overview:
Package Quantity 1
Product Type Mattress
Default Quantity 1
Mattress Top Tight Top
Collection Serta iComfort Hybrid
General Warranty 10 Year


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