2Pcs 18*24 White Pillow Insert Form Insert Sham Stuffer Rectangle Stripes 2Pcs in one bag its for a 12 x 21 pillow insert fit,and also fit for 17 x 17; 16 x 16 and 15x15 pillow cover Odorless,washable,polyester cover,resilient; For use in indoor or outdoor shams and decorative pillow covers Rejuvenate a decorative bed pillow or sofa pillow..