DescriptionProduct InformationFor the past 40 years, every point at the US Open has been scored with a Wilson US Open tennis ball. Unparalleled consistency and performance make it the gold standard in tennis, trusted by the best in the game when it\’s all on the line. Crafted with premium woven felt, this ball is available in Extra Duty, Regular Duty and High Altitude variations.Approved by USTA & ITF for competitive playOfficial Ball of the US OpenMade with premium woven feltExtra Duty: Ideal performance on hard, abrasive courtsRegular Duty: Ideal performance on soft, clay/indoor surfacesHigh Altitude: Ideal performance on surfaces above 3,000 ft.Can includes 4 balls
