The NEW Protect A Bed Dream Cloud Mattress Protector in King size (78" X 80") is a solid white rectangular sheet made with a waterproof layer and a dust mite allergen barrier. Made from lyocell material, this mattress protector provides a comfortable and hygienic sleeping environment. Perfect for the bedroom, this product from Protect-A-Bed ensures your mattress stays clean and protected while you enjoy a peaceful and restful night's sleep.