Approved by ITF for competitive play Core comprises natural rubber for maximum consistency and resiliency Felt limits moisture and dirt pick-up for added consistency and visibility Excellent durability and consistent performance on clay court surfaces Can includes 3 balls Crafted ...Approved by ITF for competitive play Core comprises natural rubber for maximum consistency and resiliency Felt limits moisture and dirt pick-up for added consistency and visibility Excellent durability and consistent performance on clay court surfaces Can includes 3 balls Crafted for ideal performance on clay, the Wilson Roland Garros Clay Court tennis ball continues the brand's rich tradition of high performance tennis balls on the biggest stages in the sport. Boasting a core designed for longer rallies and a felt that limits moisture and dirt pick-up for peak consistency during grueling points, the Wilson Roland Garros ball produces performance fit for the zenith of the clay court season.