The environmentally-friendly Chuckit! Rebounce Ball set includes two balls made of natural recycled rubber that is durable and long lasting. Designed to fit Chuckit! Launchers so you can use a bouncy Rebounce Ball with your favorite Chuckit! Launcher to exercise your friend three times as fast. Easy to clean after a fun-filled day of fetch with your pet. Bright colors give increased visibility and help to prevent the ball from getting lost. Ships in a variety of random fun colors. Product Note: For supervised play only.