Both the GlacioTex Waterproof Mattress Protector and GlacioTex Cooling Cover rely on our cutting-edge cooling technology to pull heat away from your body while you sleep. The difference, though, is the GlacioTex Waterproof Mattress Protector is removable and machine washable while the GlacioTex Cooling Cover is sewn into the surface of your mattress and cannot be removed. Because of this, it is spot clean only.