DIYPillow Keith haring Custom Pillowcase Personalized Pillow Cases Customized Pillow Case Covers Size 18 X 18 (Two Sides) Made of 50% cotton 50% polyester Size: 18 X 18 Inch (Two Sides Print) Pillow Insert are not include Invisible zipper and allows easy insertion and removal of pillow Machine wash, tumble dry in any temperature.