Nonwoven, Indoor/Outdoor 18"x18" Throw Pillow Insert; Made in the U.S.A 100% Polypropylene Made in USA Knife-edge, 16"x16" Throw Pillow Insert; Made in the U.S.A Spot Clean or Cool Wash and Tumble Dry Low Heat 1 Non-woven Polypropylene Insert Best When Used with 17"/18" Square Cover for Snug Fit Can be Used for Indoor/Outdoor Applications