A great option for moms looking to keep the crib mattress clean and dry while providing comfort for your little one. Our quilted play yard mattress pad is made with a surface layer of 100% Cotton with an allergy barrier that is a soft knit fabric backed with ultra-thin breathable, waterproof polyurethane membrane. Specially designed patented safety stay-on corners and extra-deep sides keep this mattress pad in place at all times, no matter how thick the mattress. You can never have too many mattress pads, so keep several in your linen closet. It is sized to allow for shrinkage and the full skirt is designed for a snug fit. Machine wash and dryer friendly.