Custom Colorful Tie Dye Art Throw Pillow Case Cushion Cover 18x18 Inch - Twin Sides Printing Size:18"x18" Material:50% cotton,50% polyester It's a zippered pillow case,with a zippered opening on the side. The material is made of a fine soft blend of fabrics,giving the pillow case a soft and comfortable texture. Does not include the pillow core.Form-fitting design