Engineered for golfers who demand maximum performance the srixon z star golf ball delivers unmatched technology with incredible feel so golfers can elevate all aspects of their game to score betterenergetic gradient growth egg core technologylower compression energetic gradient growth core even softer feel on all shots and improved launch conditions for more distance off the tee338 speed dimple patternmore aerodynamic 338 speed dimple pattern improved flight performance for additional