3 premium balls per can / 24 cans per case.  Official Supplier of the Australian Open, Madrid Open & Italian Open.  Brighter Max GLO HD Felt for ultimate Visibility. 

ITF and USTA Approved 

The Grand Prix tennis balls are perfectly suited for tournament play on hard courts With the Grand Prix All Surface tennis balls from Dunlop, consistent performance comes standard. Enhanced with a premium woven felt for brighter visibility and our specialized rubber core for unmatched feel, the Grand Prix All Surface tennis balls are perfectly suited for tournament play