Mattress protection that feels luxurious. Under the soft, breathable cotton percale cover, is a generous layer of highly absorbent natural wool. Light and soft, with a high loft, this wool has a unique soft, down-like fiber. Finished with a waterproof microfiber lining, this Wool Mattress Protector is designed to provide a soft, yet durable layer of protection for your mattress. Wool is also naturally thermoregulating, providing cooling comfort during the night. Plus, it's machine washable and easy to care for. Enjoy luxurious and superior protection for your mattress and a restful night's sleep.