Noiseless and Clean Mattress CoverThe thickness of the waterproof mattress cover was designed neither too thick or too thin, ultra-soft and flexible, and will not cause the rubbery, swishing sound that other mattress protectors do. | Perfect Fit Waterproof Mattress CoverFitted sheet design with elastic skirt system fits mattresses up to 21 inches deep, an elastic band automatically pull excess material under the mattress to firmly secure the cover into place. | Machine Washable Mattress ProtectorMachine washable on cold or gentle cycle, Dry the queen size waterproof mattress protector on the low temperature or under sunshine, no ironing and blench required. |