The new Z-STAR golf ball's proprietary urethane cover is super soft for added spin control without sacrificing distance. The 324 aerodynamic dimple design, combined with the large Energetic Gradient Growth(TM) core, produces a penetrating ball flight that is unyielding to the wind. The Z-STAR is available in both Pure White and Tour Yellow for added visual performance. The Z-STAR is a high performance multilayered ball with extremely soft feel. This offering is the softer of the two premium Z-STAR balls and provides slightly more spin and feel around the green. The Z-STAR performs best with driver swing speeds between 80mph and 105mph.