A natural rubber ring toy that utilizes engineered carbon reinforcement for added durability Perfect for an interactive game of fetch on land or in the water. A great chew toy option for non-aggressive chewers and puppies. Easy to clean: just use warm water to wipe goughnuts rings clean after a long day of playing Small ".75" red lite bite Dimensions: .75 inch cross sec/ 3 inch diameter Suitable for dogs 2-10lbs Durability scale score: 40 Medium "original" red lite bite Dimensions: 1 inch cross sec/ 4 inch diameter Suitable for dogs 13-25lbs Durability scale score: 46 Large "maxx" red lite bite Dimensions: 1.25 inch cross sec/5-inch diameter Suitable for dogs 26-55lbs Durability scale score: 52.