Extend the useful life of your mattress when you cover it with the Malouf Sleeptite 5 Side Mattress Pad in White, Twin XL. The polyurethane under polyester cover has microscopic pores to maintain breathability while remaining waterproof. It is rated as a barrier to allergens, mites, and viruses. Protect five sides of your mattress from damage and moisture without sacrificing comfort. A good, worry-free night’s sleep leads to good mornings and better days. This is what dreams are made of. Product Details: • 100% polyester top layer is soft to the touch • Fits mattresses up to 22” deep • Fully protects on five sides