Description If you’re looking for a ball that’s built to last on hard courts, check out the Dunlop ATP Championship Extra Duty 24 cans! Endorsed by the ATP World Tour, this premium tennis ball is a perfect match for both club and recreational players. HD Pro Core and HD Pro Cloth technology combine to provide the consistency and performance that high-level players deserve. When you need a ball to withstand long matches on hard surfaces, reach for the Dunlop ATP Championship Extra Duty 24 cans! 3 balls per can Suitable for play on hard courts Approved by the USTA and ITF.