Designed for the most demanding use, the Chuckit!® Ultra Ball® is not your dog's ordinary ball. Simply put, this is the best ball for the game of fetch. Developed to have high bounce, high buoyancy, high visibility, and high durability. The Chuckit! Ultra Ball promises to outplay the ordinary; it can be used in the water and is designed specifically for the game of fetch. Launcher compatible Strong and durable, yet gentle on dog's mouth It floats! Great for land or water play Bright colors provide increased visibility Great for fetch Made in USA Available in 3 Sizes: Small 2pk, Medium single or 2pk, Large (single), X-Large (single) and Size Dimensions Small: 2" diameter (compatible with the Chuckit! Small Ball Launcher) Medium: 2.5" diameter (compatible with the Chuckit! Medium Ball Launcher) Large: 3" diameter (compatible with the Chuckit! Large Ball Launcher) Extra Large: 3.5" diameter