The Nightmare Before Christmas with Doctor Who Tardis Police Custom Rectangle Pillowcase Covers Standard Size 20"x30" (Twin sides) Standard pillowcase is roomy in size 20x30 (Twin sides) Made of 50% cotton, 50% polyester Does not include the pillow core.Form-fitting design Makes a great quality gift for someone who has everything The perfect complement to your couch, custom pillows will make you the envy of the neighborhood.