Registry 180 Thread Count ConcealedZipper Pillow Protector will keep your property s pillows clean and fresh, while enhancing guests comfort They features a cottonrich blend for comfort The concealed rustproof nylon zipper is hidden 4 inches from the end of the pillow The protector provides a secure and clean middle layer between the pillow and pillowcase This queen size pillow protector measures 21 W x 31 L