Waterproof Nylon Mattress Cover provides a quality bedding solution for residence halls, dormitories, camps, shelters and more. Our heavy duty, waterproof nylon mattress covers are made of a durable 210 Denier Navy Nylon and protects your mattress from spills and stains.Before leaving our warehouse, all covers are tested for quality assurance. We have a wide variety of sizes available and all are fire retardant, hypoallergenic to protect against allergies, antibacterial, waterproof, and have a zippered closure.