The new Z-STAR XV 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 Z-STAR XV is offered in Pure White and Tour Yellow for added visual performance. Between the two Z-STAR balls, the Z-STAR XV is a more distance oriented tour performance ball which returns less spin off the driver creating longer, more penetrating ball flight. 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. Our Mint grade is really MINT grade!