Upgrade to the Beautyrest Harmony Lux Hybrid Trilliant Series Firm model to experience more cooling benefits and a firm, ultra-supportive feel. Proprietary ContourFit Design construction provides a responsive sleep surface for comfort throughout the night. Just beneath the top panel are four premium foams, including Micro DiamondTM Memory Foam that’s infused with diamond particles to help conduct heat away from the body and EverGelTM HD Gel Memory Foam that provides consistent, contouring pressure relief from the moment you lie down. At the core is the Precision Support System powered by T2 Pocketed Coil Technology, with a patented dual-strand design that provides additional support in the center third where you need it most. At the sleep surface, InfiniCool Max offers three layers of advanced cooling technology, with two cool-to-the touch layers at the sleep surface and diamond infused memory foam just below it, to help you fall asleep and stay comfortable all night. Beautyrest Harmony Lux Hybrid also features our exclusive sustainable fabric technology in partnership with SEAQUAL, recovering the equivalent of 50 water bottles from our oceans for each Queen mattress.