The Virtually Indestructible Best Ball Dog Toy - No dog can destroy the Virtually Indestructible Ball! Gorilla tough, safe, and molded of non-toxic thick polyethylene plastic balls. Your dog will surely spend hours chasing and batting around this fun toy. Available in 4 sizes: 4.5", 6", 10", and 14". Colors may Vary in assorted bright colors. Not made for retrieving and always supervise play.