Chuckit!(R) Tennis Balls Ready Set Fetch! Give your dog something to jump for. ChuckIt! Tennis Balls are high quality and designed for the fun games of fetch with your best friend. Made with extra thick rubber core, the ChuckIt! Tennis Balls come in attractive colors to improve visibility and are perfect to use alone or along with a ChuckIt! Ball Launcher ( sold separately ). Features: High quality with extra-thick rubber core Attractive color to improve visibility Can be used alone or with a ChuckIt! Ball Launchers ( sold separately ) Interactive play strengthens bond with your dog Comes in a variety of sizes to accommodate all size dogs Item Specifications: Color: Assorted, colors may vary Size: Small: 2 inch Count: 2 Pack Recommended for small dogs only Medium: 2.5 inch Count: 4 Pack Recommended for small and medium size dogs Large: 3 inch Count: 1 Pack Recommended for medium and large size dogs X-Large: 3.5 inch Count: 2 Pack Recommended for large and x-large size dogs