The J. New York Royalty overstuffed mattress pad is the perfect foundation to keep your mattress protected with added cozy comfort. 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 hypoallergenic ultra-lofty fiberfill mattress pad is constructed with all-around channeling and wavy quilting for a smooth cozy sleep surface. The pad is overfilled with down-like fiber for luxurious softness and breathability. The four-way deep pocket stretch skirt can fit up to a 21-inch mattress.