Molded from the finest corded rubber on the market, nothing matches the pliability and strength of DuraFlex rubber. Crush-proof, crack-proof and freeze-proof so you can use it indoors or outdoors year-round. A great feeding pan that holds up to rugged use and abuse. For outdoor use, works great to supply your own 15 in spare tire to anchor the pan. Rubber is naturally safe and soft for animals. Perfect for horses, sheep, goats, alpacas, llamas and other livestock.