Serta® iComfort® CF4000 Firm

MAX COLD™ COVER Made from super cool high-performance fibers that deliver an instant cool-to-the touch sensation. Helps promote falling asleep faster, and less tossing and turning. ULTRACOLD™ SYSTEM Phase Change Material creates a layer of extra-cool Carbon Fiber Memory Foam that provides a cooler sleep surface to help you fall asleep faster, while providing exceptional pressure point relief to reduce tossing and turning and promote deeper REM sleep. CARBON FIBER MEMORY FOAM New for 2020, every iComfort foam mattress is made with Serta's exclusive Carbon Fiber memory foam. This system channels heat away from your body and provides exceptional strength for back and neck support. DEEP REACTION™ MAX MEMORY FOAM This unique, dense material is designed to provide a firm yet conforming feel and deep-down support not often found in traditional memory foams. SERTA® SUPPORT FOAM Serta's Support Foam combines gentle cushioning with extra support, for more firmness at the sleep surface.