High-performance ball for dogs. Featires a hollow, mesh-like design that helps facilitate breathing and airflow into your dog's lungs while running and fetching - a breathable alternative to standard tennis balls. Compatible with Chuckit Dog Ball Launchers. Can also be used as a treat toy for dog training by utilizing the openings to stuff dog treats inside. Also floats for water or pool play. Measures 3 inches in diameter and is best suited for dogs weighing 60 to 100 pounds.