Z-STAR XV provides maximum ball speed for unmatched Driver and Iron distance. Its premium 3-piece construction gives skilled players complete tour performance, tee to green New FastLayer DG Core A newly formulated core starts soft in the center and dramatically becomes firm around its edge, giving high-speed players exceptional feel and plenty of ball speed for maximum distance New Spin Skin+ A durable coating, new Spin Skin+ digs deep into Wedge and Iron grooves, maximizing spin for better control and stopping power 338 Speed Dimple Pattern Less drag and more lift boosts overall distance and flies straight, even in the toughest wind conditions.