Dusk 2 Dawn Pebbletex Organic Cotton Quilted Waterproof Mattress Protector, Twin 100% Cotton Top, 100% Polyester Liner Certified organic cotton top for comfort and softness Polyurethane laminate waterproofing treatment keeps you mattress protected Durable, stretchable fabric for easy on-and-off Cotton jersey fitted side panels with 21- inch pockets Machine Washable