Designed for the most demanding use, the Chuckit!? Ultra Ball? is not your dogs 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. Can be used in the water and is designed specifically for the game of fetch. Features an extra-thick rubber core and quality material that floats. The bright color gives increased visibility and helps to prevent the ball from getting lost. Compatible with Chuckit! Launchers. Available in Small, Medium, Large, X-large and XX-large in a one or two-pack. Product Note: For supervised play only. Know your dog and choose the appropriate size and type of toy to prevent choking or other harm. Inspect this toy regularly; if the toy is damaged or if parts become separated, remove toy and parts as injury may result. Not a childs toy.