Description If you’re looking for a ball that’s built for hard courts, check out the Dunlop ATP Championship Extra Duty 12 cans! Endorsed by the ATP World Tour, this mid-range tennis ball is the perfect match for club and recreational players. HD Pro Core and HD Pro Cloth technologies combine to provide the consistency and durability that players deserve. When you need a tennis ball to withstand long matches on hard surfaces, reach for the Dunlop ATP Championship Extra Duty 12 cans! 3 balls per can, 12 cans per pack Suitable for play on hard courts Approved by the USTA and ITF.