Keep your property’s pillows clean and fresh, while enhancing guests’ comfort. The Registry 180 Thread Count End-Zipper Pillow Protector features a rustproof nylon end zipper and a cotton-rich blend for comfort. The protector slips easily over the pillow and zips closed, providing a secure and clean middle layer between the pillow and pillowcase. This king size pillow protector measures 21 W x 37″ L.