Srixon Z Star XV Golf Balls The new Z STARxv golf ball's proprietary urethane cover is the thinnest and the softest in the premium market producing an excellent combination of distance and spin. The new four piece dual Energetic Gradient Growth core provides the best distance in a premium offering while maintaining low spin to optimize driver performance. The Z STARxv is offered in Pure White and Tour Yellow for added visual performance Features Srixon Z Star XV Golf Balls 8226 How it Compares Between the two Z STAR balls, the Z STARxv is a more distance oriented tour performance ball which returns less spin off the driver creating longer more penetrating ball flights. The ball feels slightly firmer, but does not sacrifice feel and control around the greens. Overall, this ball maximizes its performance when played by golfers who have a driver swing speed greater than 95mph 8226 Spin Tuned to increase distance on the driver while providing unparalleled stopping power on approach shots 8226 Acceleration Developed to maximize the energy transfer to the ball for more ball speed resulting in greater distance 8226 Trajectory Designed to produce an aggressive ball flight that maximizes distance regardless of weather conditions. High ball speed is maintained for a longer period of time during flight 8226 Responsiveness Configured to provide great touch and feel greenside. In addition, the ball is responsive on full shots that need to be shaped Specs Srixon Z Star XV Golf Balls Model Type Cover Thickness 0.012 Mid Thickness 0.039 Core Diameter 1.580 Compression 100 Dimples 324