IRON COMPANY Recycled Crumb Rubber Bumpers are proudly manufactured in Alabama from a nearly indestructible combination of recycled, vulcanized rubber and a 2” stainless steel insert. Are you looking for the best recycled bumper plates for crossfit and Olympic weightlifting? These bumper plates are tough enough to handle the punishment of intense daily use whether it is in a high school weight room, university sports training center, crossfit box, Olympic training center, military base, or your own garage gym at home. These American-made plates are available in weights of 10, 15, 25, 35, and 45 lbs. and are guaranteed for one year after purchase. GSA-approved for military purchase.