Customized Standard Pillowcase Librarian Library Booklover A Room Without Books Throw Pillow 18 X 18 Square Pillowcase Throw Pillow Cover Cushion by Cushion Cover Dimensions: 18" x 18" Burlap Cotton Linen Material. Hidden Zipper at one side. Image print back or front, please see the photo shows. Not include the insert, just the pillow cover. Machine washable.