•Square Pillow Insert for 20"x20" or 18"x18" Pillow Cover •21”x 21” •100% Cotton •Care Instructions: Machine Washable. Hang or Lay Flat Dry. Description Perfect for any 20"x20" or "18"x18" pillow cover, this feather down in cotton cover square pillow insert makes it easy and affordable to update the look of your home. Change the pillow covers as often as you like. Adding decorative pillows to any room is among the most inexpensive ways to change up the look of your room. It's even more affordable when you use the same insert repeatedly and only change the pillow cover with each season or room makeover. This square pillow insert measures 21 inches by 21 inches. If you need to clean this pillow insert, please Machine Washable. Hang or Lay Flat Dry. it only with a damp cloth and let it air dry. Features: Square (shape) Number of Pieces: 1 Dimensions (Overall): 21 Inches (L), 21 Inches (W) Closure Type: Sewn Seam Fabric Name: Plain Weave Features: Zipper Material: Textile 1: Cotton Material Percentage 1: 100 Care and Cleaning: Machine Wash, Line Dry or Lay Flat to Dry