Kong's Ring Dog Toy is made of durable rubber in a ring shape for additional fun. The Ring Dog Toy holds up against tough chewers- without harming their teeth and gums. The variety of grooves and nubs around the ring work to stimulate your dog's playtime. If you have a dog that loves to fetch, the Ring Dog Toy is easy to toss and has a fun bounce! Available in small/medium and medium/large.