It's no secret that the new groove rules instituted by the USGA are designed to reduce spin off wedges and short irons, placing more of a premium on shot-making. The new Tour i(s) leverages 2nd Generation Dual Core technology, making it easier for golfers of all abilities to generate maximum short-game spin. The softest Callaway tour ball ever features refined HEX Aerodynamics for a stronger ball flight and more distance by reducing drag and promoting efficient ball flight in all wind conditions.