Wilson US Open is the official tennis ball of the Slam with the same name.
Made with premium tex/tech industries felt for performance and longer durability, born for the cement, adapts perfectly to all type surfaces.
USTA and ITF approved for competitive play
Extra Duty: Optimal performance and durability on hard courts
High Altitute: High altitude core for best performance on courts above 3000ft (914,4 m)
Regular Duty: Optimal performance and durability on clay/indoor courts
Grass Court: Optimal performance and playability on grass court surfaces
3 ball pressurized tube