Allersoft Hypoallergenic 100% Waterproof Mattress Protector 100% Cotton COMPLETE PROTECTION: The waterproof membrane barrier protects against allergens, dust mites, and fluids. The protective waterproof material prevents moisture from penetrating through to your mattress. 100% BREATHABLE COTTON COVER: The waterproof membrane is made from soft cotton fabric that keeps the surface of the hypoallergenic mattress protector cool and comfortable. EXPANDABLE SKIRT: The expandable skirt is designed to stretch over mattresses up to 18 inches deep, keeping the dust mite barrier securely in place while providing a snug fit to seal out allergens. QUALITY MATERIALS: Our waterproof mattress protectors are free from potentially harmful chemicals like PVCS, phthalates, fire retardant and latex, so you can rest easy at night. LIFETIME WARRANTY: Each of our hypoallergenic mattress covers are made in the USA and boast a premium lifetime warranty so you can buy with confidence knowing you can request a replacement at anytime.