Wilson Roland Garros Clay Court tennis balls 4 pcs WRT115000. Features: Wilson balls are the official balls of the Grand Slam tournament Roland Garros. Bright yellow color ensures excellent visibility during fast exchanges. Pressurized balls are exceptionally durable. The natural rubber core provides high bounce quality even after prolonged use. The felt limits moisture and dirt collection. Special technology minimizes air loss from inside the ball to the outside. Pressure remains at its original level longer, and the ball bounces more predictably. Balls approved by ITF and certified by USTA are suitable for hard courts and clay. The set includes 4 Wilson tennis balls packed in a practical tube.