Micro (polyester) liquid proof mattress protector fitted mattress top surface material: 100% polyester bottom surface material: 100% polyurethane membrane (liquid proof fabric) therefore, you should choose the same size as the size of your bed. our products are guaranteed. areas of use and properties: · it prevents the formation of sweat. it is impermeable to any liquid, does not stain and prevents the formation of bad odor. upper surface is soft fabric, lower surface is laminated with protective pu membrane. it has air permeability thanks to micro pores. thanks to the rubbers on its edge, it completely wraps the mattress, is non-slip, elastic and does not crumple. it is useful for long-term hospitalized patients. ideal for children or adults with bedwetting problems. directions for use: ·it should be washed at maximum 60 degrees. in order not to lose its breathability, it should be rinsed with plenty of water after washing. · do not iron. · drying can be done at low temperature. · bleach and similar chemicals should not be used. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.