Wilson U.S. Open tennis ball is known for its superior playability, consistency and classic performance. Preferred on hard court outdoor surfaces. Premium high-grade extra duty felt with excellent durability and is a super choice for matches and training session.
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
USTA and ITF approved for competitive play
The Official Ball of the US Open since 1978
In-Box Contents: 1 Can containing 3 Tennis Balls