Decorative Canvas Square Cushion Cover Astrophysics Diagrams and Formulas Pillowcase with Hidden Zipper Closure 18 X 18 Inches Size: Approx 18"*18" (45CM x 45CM) Made of canvas material. The pattern is ONLY on the front side. Hidden zipper enclosure; This is just one Cushion cover,insert is not include Comfortable and soft, make you have a great rest.