CONSTRUCTION Speed Dimple(TM) Pattern - With their deep dimensions, the 338 Speed Dimples on each Z-STAR Series golf ball punch through air for a penetrating launch. Once aloft, the dimples generate lift, driving the ball upward toward its peak and maximizing glide distance during descent. When conditions get tough and the winds reach high speeds, the 338 Speed Dimples' low drag coefficient helps the ball stay on target through the moving air and maintain distance in headwinds. CORE FastLayer DG Core - The trade-off is age-old: hard cores are fast, soft cores are slow. But the firmer a golf ball, the harsher it feels at impact, which can reduce your confidence when the pressure is on. That's why our new FastLayer DG Cores are soft at the center and get firmer from the inside out. The contrasting compression helps them rebound quicker off the face for incredible distance while still providing exceptional feel. COVER New Spin Skin+ Coating - This micronic layer of specialized urethane increases the cover's degree of friction for even more spin and control. Thin, Premium Cover - Every Z-STAR Series golf ball features an extra thin, thermoplastic urethane cover to provide tour-level stopping power around the greens. AERODYNAMICS Mid-High flight pattern for long distance