Callaway HEX Warbird Golf Balls Warbird Core - The larger, softer core results in faster ball speeds for maximum distance. It also creates a thinner cover that enhances feel without sacrificing speed and distance off the tee HEX Aerodynamics - Our proprietary surface pattern has been re-engineered to produce even better low-speed lift for more distance while maintaining the stable, penetrating ball flight thats been a trademark of HEX Aerodynamics Two Color Options - HEX Warbird is available in traditional White or Optical Yellow for additional visibility in the air or on the ground