It’s a queen-sized mattress protector with deep elastic pockets- as much as 18 inches. These pockets are intended from ice silk, creating them far more elastic and comfortable. We adored the Matouk Pillow Protector's eco-welcoming packaging, comfortable cotton fabric, and strong stitching, however the encasement is dear instead of waterproof. https://mattressencasements59122.shotblogs.com/the-basic-principles-of-bedding-48544286