The new Srixon Z-STAR 8 Golf Balls are constructed with a reformulated FastLayer DG Core featuring a more aggressive soft-to-firm transition designed to boost ball speed and distance off the teel, while still maintaining great feel. The Z-STAR 8 provides maximum greenside spin for unmatched control and stopping power. As such, the standard model lends itself to players who value finesse around the greens and pinpoint approach shots. Srixon Z-STAR 8 Golf Balls Feature: Designed for driver swing speeds above 90 mph New FastLayer DG Core starts soft in the center and dramatically becomes firm around the edge, giving high-speed players exceptional feel and added approach shot spin New Spin Skin+ durable coating digs deep into wedge and iron grooves, maximizing spin for better control and stopping power 338 Speed Dimple Pattern reduces drag and increases lift to boost overall distance and provide a straighter flight, even in the most challenging wind conditions Having solved the first portion of the distance equation, Srixon moved onto the ball's aerodynamics. With their new, deeper dimensions, the Z-Star's redesigned 338 Speed Dimples punch through the air for a penetrating launch. After launch, the dimples generate lift, driving the ball upward and maximizing glide distance during descent. And when it gets windy, the Speed Dimples' low drag coefficient helps slice through the air, so your ball stays on target and maintains distance in head winds. When it comes to greenside spin performance, the Z-Star excels. Although it is a challenge to manufacture, Z-Star balls feature an extra thin, thermoplastic urethane cover that delivers unmatched, tour-level stopping power. For even more spin and control, Srixon adds their Spin Skin coating, which increases friction on chips and pitches.