The Protect A Bed Dream Cloud Mattress Protector in King size is a solid white rectangular mattress protector designed with a waterproof layer to prevent dust mite allergens from reaching your mattress. Made of lyocell material, it provides a barrier to keep your mattress clean and fresh while ensuring a cozy sleeping environment. With dimensions of 78" in length and 80" in width, this mattress protector is perfect for any bedroom setting and ensures a restful night's sleep.