It extends the life of the mattresses thanks to its micro soft surface and waterproof membrane. the upper surface is polyester and very soft. it has a membrane on the back and is waterproof.product featuresit is waterproof.the edge is elasticated and fixed to the mattress.washing instructions.can be washed at 90 degrees.no bleaching.no drying.no ironing.dry cleaning can be applied.more than 50 stocks are offered to be sold at the campaign price.this Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.