Ultra Featherproof Zippered All Cotton Pillow Protector 400 Thread Count - Set of Two Feather and down proof pillow protector, with nylon zipper clousure 400 Thread count 100% cotton finely woven sateen Will keep pillow fresh, and refresh the feel of older pillows For standard to Jumbo sized pillows, will fit pillows 21" X 27" to 21" X 29" in size Package contains a set of two (2) protectors