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 inch spare tire to anchor the pan (optional, not included). Rubber is naturally safe and soft for animals. Perfect for horses, sheep, goats, alpacas, llamas, and other livestock. 17.5 inch diameter by 4.5 inch high, holds 3 gallons.