Wild Bramble Treat Yo Self Cotton Canvas Zippered Pillow Case Cushion Cover 18 x 18 Inches The material of this pillowcase is top quality COTTON CANVAS, which is durable and environmentally friendly. Pillowcase size:18 inch * 18 inch (45cm * 45cm), Fits most standard and queen size pillows. This cushion cover has an invisible zipper, and it is washable. Print on one side. Package: one pillow case, pillow fillings are not included.