Get the most out of your dog's exercise time, or a simple game of fetch, with Chuckit! Ultra Balls. These easy-to-clean, natural rubber balls bounce high for fun playtime and exercise. They also float in water, giving exercise time a whole other dimension. Compatible with the Chuckit! Ball Launcher (not included). 2-pack. Great for exercise or play with your dog Easy-to-clean, natural rubber balls Floats in water