... for your chose Specification:quality cloth fabric laminated TPU(polyurethane) film, waterproof and breathable, protect the mattress from wet ... cover with zipper, when washing, pls close the zipper.TPU film introductionHigh permeability: reach 5000 ~ 8000 g/m2/24 ... hoursWaterproof: our TPU film is manufactured by polyether-based TPU, more hydrolysis resistance, more antimicrobial, more ...