Chuckit Med Rebounce Ball. The Chuckit Med Rebounce ball is made of recycled rubber, which makes the ball bounce perfectly. This makes fetching and playing with your dog extra fun! There are also some openings on the ball in which snacks can be hidden. The smooth rubber of the Rebounce ball is easy to clean and thanks to the diameter of 6 centimeters, the ball can be used in combination with all Chuckit Ball Launchers in size medium. Challenge your dog both physically and mentally with the Chuckit Med Rebounce Ball!