Features GlacierTouch Cooling 4-Way Stretch Knit with Lycra. Whispershield TheraCool Advanced Graphite & Copper Gel. Performance Foam provides excellent support, durability, and a comfortable sleep surface. Hyper-conductive graphite, with up to 10,000x more thermal conductivity than foam, transfers heat away from the body for a cooler, more comfortable sleep.Copper is antimicrobial and antiviral, plus prevents odors and stains. TheraWrap individually wrapped coils provide a uniform sleep that conform independently, reducing motion transfer.10 years non-prorated warranty.