The KONG AirDog Dumbbell combines two classic dog toys — the tennis ball and the squeaker toy — to create the perfect fetch toy. Our durable, high-quality AirDog Dumbbell will not wear down your dog's teeth. It's made with a special non-abrasive felt, compared to the abrasive material on normal tennis balls.Perfect for games of fetchSqueaker to induce playNon-abrasive tennis material will not wear down your dog's teethAvailable in three sizes: S, M and L