Callaway HEX Hot Golf Ball Trionomer Cover- This unique cover blend of three ionomers maximizes ball speed for every club in the bag - The tri-blend cover also promotes low driver spin for longer, straighter drives Fast Tech Mantle- Designed for the golf ball to jump off the face and convert its energy into more distance- Highly resilient and built to be the perfect intermediate layer between the high technology core and the resilient Trionomer cover New 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 Hot is available in traditional White or the newly formulated Optical Yellow for hotter visibility in the air or on the ground