A flexible Treat Ring chewing challenge! Holds Edible Treat Rings. Treat Rings can be inserted partially or fully for different chewing challenges. Great for dental hygiene. Treat Ring system encourages chewing to help keep teeth healthy. Provides challenging play: Treat Ring system encourages play, which helps reduce anxiety and boredom behaviors. Additional Features: Available in large and small sizes. Toy floats in water. Dishwasher safe. Toy material free of latex, vinyl, and phthalates.