GlacierTouch 4-Way Stretch Cover features soft, breathable, moisture-wicking fabric that flexes and regulates temperature for a cooler, more comfortable sleep experience.TheraCool Advanced Gel Foam provides maximum comfort and greater pressure relief with the added benefit of wicking away heat from the body for a cooler, more restful and deeper sleep.MemoryTouch Visco Lumbar provides conforming support to your body shape, while reducing pressure points.V-Coil's patented V-shaped coil formation offers a uniquely strong, flexible, and supportive sleep surface with enhanced comfort.TheraFoam Foam Encasement provides tremendous edge support, expanded sleep surface, and smoother transition when getting in and out of bed.TheraSponse Plush and Medium HD Foams provide excellent support, extreme durability, and a comfortable sleep surface for years.