The Chuckit! Ultra Tug iis a durable rubber ball on a leash-style cord and is excellent for tug-of-war games with your dog. Made of high-quality materials and designed for the game fetch. Designed for the most demanding use, this is no ordinary ball. It is an excellent ball for tugging games, with a durable 2-ply nylon handle. It has an extra-thick rubber core and a bright color for improved visibility. Developed to have high bounce and high durability. Compatible with Chuckit! Ball Launchers (sold separately). Small: 2 inches, Medium: 2.5 inches, Large: 3 inches.