Brolly Waterproof Sheet Protectors provide easy-to-use protection against incontinence. The sheets are manufactured with a 100% soft cotton top, ensuring maximum comfort and a quality night's sleep. The absorbent middle layer and waterproof backing keeps the bottom sheet & mattress dry. Brolly Sheets ensure maximum discretion with a middle layer that is both quiet and breathable. For use, simply place your Brolly Sheet on top of the fitted sheet and tuck the wings in under the mattress. We recommended washing the pad prior to use to soften the fabric and increase the product's absorbency. Brolly sheets feature a polyester-backed polyurethane backing. The product is machine washable at 40 degrees.