The Srixon Z-STAR XV golf balls provide exceptional feel around the green and optimal distance off the tee. Z-STAR XV golf balls have a slightly firmer feel for exceptional distance without sacrificing green-grabbing control. They feature the thinnest urethane cover on a premium ball and a new dimple configuration that maximizes performance. The Z-STAR XV is ideal for golfers with swing speeds of 105 mph or higher, with spin tuned for extreme tour distance and exceptional stopping power on approach shot