Wilson US Open Tennis Balls

Wilson US Open Tennis Balls - 4 Ball Can

The Official Ball of the US Open since 1978.

• USTA and ITF approved for competitive play
• Made with premium tex/tech industries felt
• Extra Duty: Optimal performance and durability on hard courts
• High Altitute: High altitude core for best performanceon courts above 3000ft
• Regular Duty: Optimal performance and durability on clay/indoor courts
• Grass Court: Optimal performance and playability on grass court surfaces