Dogs who love to chew will love the CoreStrength™ Bamboo Ring from KONG. Durable toy is made of bamboo-infused material that has a natural aroma, enticing pets to chew. Multi-textured toy with raised nubs and ridges helps clean teeth and gums and helps to satisfy your dog's instinctual chewing needs. Donut-shaped toy is fun for rolling and easy for your pet to hold. Available in 2 sizes, Small 4.5" x 4.5", and Large 5.25" x 5.25".