This memory foam mattress topper moulds to the unique lines of your body, cradling; you as you sleep, providing weightless, pressure-free support. Adjusting to your individual weight and temperature (the temperature-sensitive memory foam improves support for lower back and pressure points), you are sure to enjoy a good nights sleep. Set includes: memory foam topper and cover. Cover made from 100% polyester. 100% polyester reverse. 100% visco elastic filling. Memory foam. Cover is sponge clean only.