Top cloth waterproof bed for pure cotton, flannel, terry, bamboo fabric, or quilted, bottom is TPU membrane,the skirt is knitte Top fabric:80%cotton 20%polyester 110gsm Terry with 0.02mmPU lamination bottom and skirt fabric:100%polyester 90gsm Jersey with 0.02mmPU laminationZipper,box style waterproof encasement protector