Description
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
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