This ball is made of 75% natural rubber and neutral felt, making it very durable. The better a ball is able to contain air, the more durable and long-lasting it is. Because balls leak air over time, shots tend to lose some of their power. This is why professional tennis players change balls every nine games.
Use the balls within 2 months of opening the tube. De-pressurised balls lose their bounce after 2 months without use.
Ball tested and approved by professional players (Jerome Haehnel, former No. 78, and Nicolas Escude, former world No. 16 and Davis Cup champion). Ball tested and approved by the Lille TC club National 1 team.