Z-STAR XV provides maximum ball speed for unmatched driver and iron distance. Its premium 4-piece construction gives skilled players complete tour performance, tee to green. Our more resilient dual-core starts soft in the center. A new, more durable coating with flexible molecularbonds digs deep into wedge and iron grooves,maximizing spin for more control and more stoppingpower. Less drag and more lift boosts overall distance andflies straight, even in the toughest wind conditions.and gradually becomes firm around its edge, givinghigh-speed players exceptional feel and class-leadingdistance.