Silky-smooth and ultra-thin, the Malouf™ TENCEL™ Smooth Mattress Protector is quiet, breathable, and hypoallergenic. This protector features a waterproof barrier that prevents allergens and dust mites from interfering with your sleep environment. The fitted-sheet style protector is finished with a durable Universal Fit™ elastic that ensures a secure fit on mattress depths up to 22 inches.