Approved for competition by the ITF. Official Roland-Garros balls since 2020. The core is made of 100% natural rubber for optimal consistency and durability. The felt prevents the ball from absorbing moisture and dirt, ensuring improved consistency and visibility. Excellent durability and consistent performance on clay courts. The box contains 4 balls. The balls are numbered to distinguish them from those of other players on adjacent courts. Box with 4 Roland-Garros Clay Court balls. On the court at Roland-Garros, the Wilson Roland-Garros tennis ball is part of the rich tradition of the brand's high-quality tennis balls on the biggest stages of the sport. With a core designed for long rallies and a felt that prevents excessive moisture and dirt absorption to ensure optimal consistency during the most intense points, the Wilson Roland-Garros ball delivers performance tailored to the key matches of the season on clay courts.