Protect-A-Bed Quilt Guard Waterproof Mattress Pad King Waterproof: Polyurethane film backing repels liquids like urine & sweat. Breathable Barrier Fabric: Guaranteed NOT hot to sleep on. Allows body vapor to breathe through protector. Dust Mite & Allergy Barrier: Miracle membrane backing provides a healthy sleep zone for your family. Easy to Wash & Use: Machine washable in warm or hot water. Tumble dry on medium heat. Do not bleach or dry clean. Fits all Mattresses: Fitted sheet style pad is sized to even fit pillow-top mattresses comfortably.