Air Fetch Dog Ball: These high-performance balls for dogs have a hollow, mesh-like design that helps facilitate breathing and airflow into your dog's lungs while running and fetching; a breathable to standard tennis balls

Run Further, Fetch Longer: Chuckit Dog Fetch Balls are 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

Sizing matters: Size medium measures 6

4 CM in diameter and is suited for dogs weighing 60 to 100 pounds

The ball should be small enough for your dog to carry, but large enough that the ball can't completely fit in their mouth