The Srixon Z-STAR is the ultimate multilayered golf ball, designed for the player looking for a tour proven ball with great feel and distance control. The high-performance standard found in Srixon products is evident in every detail of this ball, from the 324 aerodynamic Invisiseam dimple design to the thin, ultra-soft urethane cover, this ball is the next standard against which all balls will be measured. 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.