Golden Aspens Rocky Mountains Colorado Cotton Polyester Home Decorative Accent Throw Pillow Cover Cushion Case Pillowcase for Sofa 18-Inch It usually takes 8-14 working days for delivery. This pillow cover is made out of 50% Cotton and 50% Polyester. Size: 18"x18" 45x45 Cm, Twin sides (The Front side is the same to the back side.) Please notice the item can't including Filler,just the cover only ! Hidden zipper looks nice and is two inches shorter than the pillowcase,which makes the pillow insert easy to slip in and out.