Simmons Beautyrest® Platinum™ Hybrid mattresses, use the newest technology to provide cooler, supportive and pressure relieving Premium mattresses. A cooler sleep surface is the result of the INFINICOOL™ HD SURFACE, cooling materials uniquely positioned just beneath the High Definition knit fabric cover. This fabric is luxe in feel and helps wick away humidity while you sleep. The newest Hybrid Coil System is a blend of Individually Wrapped Coils which alternate with Individually Wrapped Memory Foam to provide a balance of pressure relief and support. Added layers of Memory Foam make these mattresses long wearing, supportive and truly a Premium mattress.