The ROSENVIAL series mattress protectors not only protect your mattress from dirt, but also provide you with a soft, cool, cushioned surface to rest deeply on. The filling includes tiny fibers impregnated with wax that help maintain body temperature during the night. And thanks to the elastic straps at each corner, the mattress pad will always stay in place. And if that's not enough, you can comfortably machine wash them at 40°.