Product Overview: Prior Generation - Z-Star Golf Balls - 24 Pack Stock up on your favorite tour ball with our best deal of the year, just in time for the season opener. Push your distance to the limit and enjoy plenty of greenside control with the most powerful ball in our lineup. If all your birdies start with a stratospheric tee shot, then Z-STAR XV was built for you. Features: NEW FastLayer Core Starts soft in the center and gradually becomes firm around its edge, giving high-speed players exceptional feel and plenty of ball speed for maximum distance. A newly formulated inner core adds resiliency for even more ball speed. NEW Spin Skin with SeRM A soft, thermoplastic urethane cover features Spin Skin with SeRM, a durable coating with flexible molecular bonds. It digs deep into wedge and iron grooves, maximizing spin for more control and more stopping power. NEW 338 Speed Dimple Pattern Less drag and more lift boosts overall distance and flies straight, even in the toughest wind conditions.