Dunlop Grand Prix Regular Duty - Case . Long Lasting Tennis Balls This extended string length creates

This extended string length creates deep elastic deflection

maintaining cleanliness and freshness inside the bag

Swingweight: ~315–318 (Strung)

Sonic Core with Infinergy® (by BASF): Formulated into the 2 and 10 o'clock areas of the head

Dunlop Grand Prix Regular Duty - Case . Long Lasting Tennis Balls This extended string length createsThe Grand Prix Series offers the ultimate in performance and durability. A special mix of 14 ingredients makes up the secret rubber core formula which is combined with the finest woven felt to produce a ball for outstanding performance and feel. The use of "MaxGlo" felt, which is 14% brighter than regular cloth, allows the player to sight the ball earlier, giving more time for shot preparation. The Dunlop Grand Prix Regular Duty Case is the epitome of