2X Square Sham Stuffer Pillow - 18 x 18 # What's one more pillow? Stuff another decorative sham with this large square stuffer pillow Shell is 50% cotton/50% polyester; fill is polyester 18Lx18W" White Machine Washable Rejuvenate a decorative bed pillow or sofa pillow For best results this insert is recommended for 17x17 sham covers, If you sham is 18x18 we recommend 20x20 inserts