Generic Personalized Panic At The Disco American Music Band Handwriting Art Print Sold By Too Amazing Pillowcase Rectangle Pillow Case 20x36 (one side) Size: 20 x 36 inches. Fits most size pillows. 50% cotton, 50% polyester.More comfortable and durable. Without buttons, and has an opening on the side.pre-shrunk fabric, this pillowcase is washable at 60 C. Made from soft blend of fabrics, giving the pillow case a soft and comfortable texture. Delivery time is about 9-15 business days.