Callaway HEX Black Tour Golf Balls i-Core  Technology combines a soft inner core with a firm outer core for optimal spin separation from tee to green, optimizing the balance of distance and control DuraSpin  cover uses a proprietary formulation to significantly improve durability and yield the soft feel and exceptional short-game spin players seek in a Tour golf ball Dual mantle layers help reduce driver spin and provide additional resiliency, allowing the i-core  to unleash powerful ball speeds HEX Aerodynamics  has a defined pattern that provides the best aerodynamic performance ever in a Callaway  golf ball, reducing drag and promoting a stable, penetrating ball flight that holds its line in the wind