Waterproof and highly breathable mattress protector: the polyurethane membrane perfectly blocks all liquids, perspiration, urine and body fluids while allowing air to pass through Waterproof and Breathable: This mattress protector features our Waterproof and Breathable PU (Polyurethane) membrane. This membrane will protect your mattress from liquids and, as it allows the passage of air, it will also allow you a cool and hygienic rest in all seasons. cover with large flaps adaptable for mattresses up to 30cm - Machine washable up to 60 ? C and tumble dry at low temperature The waterproof mattress pad on the sleeper side is made of 100% cotton fabric and remains thin to retain the sensations of your mattress Our mattress protector is the perfect protection for your mattress against all kinds of liquids, including spills, urine and sweat. You no longer have to worry about getting your mattress wet or the ugliness of the stain. Perfect for children, pets or any other daily accident.