The Chuckit! Birthday 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! Birthday 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 medium Chuckit! Launchers.