Wilson Roland Garros Clay Court Tennis Balls 3 pcs. WRT125000 Wilson Balls are the official balls of the Roland Garros Grand Slam tournament. The bright, yellow colour ensures excellent visibility during fast ball changes. The pressurised balls are exceptionally durable. The natural rubber core provides high quality bounce even after long-term use. Felt reduces moisture accumulation and dirt. Special technology maximally limits air loss from the inside of the ball to the outside. The pressure remains at its original level for longer, and the ball bounces more predictably. The ITF approved and USTA certified balls are suitable for play on hard courts and clay courts. The set contains 3 Wilson tennis balls packed in a handy tube.