Ready, set, fetch! The Chuckit! Whistler keeps the game of fetch interesting and challenging for your dog. Four holes in this high-bouncing rubber ball produce a whistle as it soars through the air to keep your dog interested and focused. The grip-able rubber ball is made just the right size to use with your compatible Chuckit! Launcher. These balls are also available in sizes small and medium, with one and two-pack options.

Size: 7.5cm.