New York City Taxi Cotton Polyester Decorative Throw Pillow Cover Cushion Case 18" x 18" Inch Materia: 50% Cotton, 50% Polyester. PILLOW CASE ONLY (Does not include insert) Size: 18x18 inches, Twin sides (The Front side is the same to the back side.) It usually takes 8-14 working days for delivery. Hidden zipper looks nice and is two inches shorter than the pillowcase,which makes the pillow insert easy to slip in and out.