US Open Extra Duty Tennis 3 Ball Can

The Wilson US Open Extra Duty Tennis Balls are produced with a high quality wool that is then woven into a thick and dense feltThis unique Method of producing the felt is great for hard and abrasive outdoor courtsHigh altitude core for best performance on courts above 3000 feetThe Wilson US Open Extra Duty Ball has been the official ball of the US Open since 1978USTA and ITF approved for competitive play