Design Weave Outlast All Season Temperature Regulating Hypoallergenic Pillowtop Mattress Pad &ndash; Reduces Night Sweats, 350 Thread Count, 100% Cotton, White, King Polyester Imported 350-thread count, 100% Cotton sateen weave Outlast Certified Gold Liner 100% Polyester Fiber Fill Outlast technology absorbs, stores & releases heat Balances temperature around your body and maintains optimal sleep temperature. Regulates body temperature, not too hot, not too cold Reduces night sweats Reduces thermal incompatibility for couples King mattress pad fits mattress upto 18-inch Questions/Comments? Please call our customer service number directly at 888-288-8781. Regulates body temperature, not too hot, not too cold Reduces night sweats Reduces thermal incompatibility for couples King mattress pad fits mattress upto 18-inch