Built for sleepers who run warm, Coop's Ultra-Cool Waterproof Mattress Protector keeps you cool while shielding your mattress from spills, sweat, and accidents. Its cooling jacquard fabric (a polyethylene and polyester blend) feels cool to the touch and has been lab-tested to disperse more heat than bamboo, silk, or other synthetics, so the cooling effect carries through your fitted sheet. A waterproof polyurethane backing blocks moisture from reaching your mattress, while the soft, quiet fabric means no slippery feel or crinkle. Available in six sizes (Twin, Twin XL, Full, Queen, King, California King). OEKO-TEX Standard 100 certified and machine washable.