This fetch set includes three distinct rubber balls, each built for a different play experience: one whistles in flight, one glows after light exposure for play into the evening, and one offers a lively bounce made from recycled rubber. Each ball is sized to fit a medium Chuckit! ball launcher, which is sold separately, letting owners toss the balls farther without handling a slobbery toy. The bright coloring of the balls is intended to improve visibility outdoors so the ball is easier to spot in grass or low light. Construction uses durable rubber meant to stand up to repeated throwing, catching, and retrieving. No assembly or setup is required before play. The set is intended for active outdoor fetch games between a dog and its owner.