Heartybay Home Decorative "The Big Bang Theory" Printing Cotton Linen Sofa Covers 18"X18" (red) The pattern is only available on the front side, the back is without printing. Made of 100% grade A cotton blend liene natural material Size: 18 x 18 inches / 45 cm x 45 cm Hidden zipper design, Safe to machine wash Pillow insert is not included