Foamily Premium Hypoallergenic Stuffer Pillow Insert Sham Square Form Polyester, 20" L X 20" W, Standard/White Pack more cushion to your sofa couch or bed for lumbar support or just decoration Our most resilient decorative throw pillow inserts yet, firm yet fluffy filler stuffing Measurements are seam to seam - After filling, the pillow will decrease about 10% - 15% in size; Order two inches up! 100% Hypo allergenic polyester fiber pillows - MADE IN USA - use in home or in a outdoor cover by Foamily Note To Customers: For best results this insert is recommended for 18" x 18" or 19" x 19" sham covers, If your cover is 20" x 20" we recommend 22" x 22" inserts to provide a plump and full pillow from corner to corner. For a fuller rounded pillow, order one size larger For a medium fill, order your exact size