The Grass Ball Medium is a tough natural rubber ball that is as versatile as it is fun. This innovative ball is super durable, double-molded to stand up to tough chewers this toy is built for rough play. The nubbed surfaces provide dental benefits as well as a strong area to grip for games of fetch. The Grass Ball helps to keep teeth clean and stimulate gums promoting oral health. The openings on each side allow the Grass Ball to be used as a treat ball too. Suitable for small and medium breed dogs.