Wilson US Open Extra Duty 4 Ball Tube

Play like the pros with the Wilson Extra Duty 4 Ball Tube tennis ball, the official ball of the US Open, which is designed for longlasting play on all hard courts. The Wilson Extra Duty 4 Ball Tube tennis balls are USTA and ITF approved for competitive play.They are made with premium textech industries felt for extra durability and are the official ball of the US Open. USTA and ITF approvedMade with premium textech industries feltExtra Duty Optimal performance and durability on hard courtsIdeal for longer play on hard court surfacesUS Open official ball