Customized Standard New Arrival Pillowcase Reading Book Club A Room Without Books Book Group Throw Pillow 18 X 18 Square Cotton Linen Pillowcase Cover Cushion Dimensions: 18" x 18", standard size for your pillow. Burlap Cotton Linen Material, healthy and durable. Hidden Zipper at one side, available for the pillow fillin. Image print back or front, please see the photo shows. Not include the insert, just the pillow cover. Machine washable.