Durability: The KONG Rubber Ring is designed for long-lasting chewing sessions and offers enriched learning and development experiences as a mentally stimulating play toy for dogs Instinctual Needs: The chew toy's shape and texture encourage healthy chewing behavior and intelligent responses that come naturally to dogs Teeth Cleaning: The KONG Ring is an effective dog teeth cleaning toy. Designed with rubber nubs that clean your dog's teeth and gums, the chew toy improves dental hygiene during playtime Toy Sizing: Made for Medium to Large sized dogs between 15-65 lbs (7-30 kg) Made in the USA using globally sourced materials.