The J. New York Regal Waterproof Mattress Pad is the perfect foundation to keep your mattress protected and clean. The cotton top mattress pad is specially engineered with an allergen-barrier sleep surface to prevent dust mites, pet dander, pollen and other allergens from penetrating your bedding. The reverse poly layering is waterproof for added protection and soundless for a restful night’s sleep. The hypoallergenic ultra-lofty fiberfill mattress pad is diamond quilted for a smooth, breathable sleep surface. The four-way deep pocket stretch skirt can fit a mattress up to 21 inches.