Callaway HEX Warbird Golf Balls, White, 12-Pack: * 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: ur proprietary surface pattern has been re-engineered to produce even better low-speed lift for more distance while maintaining the stable, penetrating ball flight that’s been a trademark of HEX aerodynamics * 2-year limited warranty * Model# 641495012