The Franklin X-40 Outdoor Pickleballs are designed for reliable performance on outdoor pickleball courts. Each ball features 40 precisely machine-drilled holes that help provide a balanced flight pattern and consistent spin. The one-piece rotational-molded construction provides durability and resistance to dents and cracking during outdoor play. The X-40 is USA Pickleball approved and is the official outdoor pickleball of the US Open Pickleball Championships.