LANGRIA Premium Mattress Protector (100% Waterproof, Hypoallergenic, 100% Cotton Surface Fabric, Dust Mite Protection, Fitted Sheet Style, Machine Washable) ( King) 100% COTTON SURFACE: the luxuriously soft, breathable and fast-dry cotton fabric provides exceptional comfort to your skin without affecting the firmness level of your mattress 100% LIQUID PROOF: the bottom PE laminated non-woven fabric layer prevents liquid from seeping through, and effectively blocks fluids, urine, and perspiration to prolong the use cycle of your mattress DUST MITE PROTECTION: hypoallergenic fabric provides a barrier of protection between you and your mattress against dust mites and other allergens for a healthier sleep at night FITTED SHEET STYLE: the fitted sheet style protector features a 13 in stretchable polyester skirt and an elastic band which rarely slips, meaning that it stays on your mattress all night long EASY TO CLEAN: simply wash away any stains and marks on the sheet with a gentle cycle in your washer to keep the waterproof fabric performance to a maximum