SRIXON Z Star Diamond 2 (2023) Golf Ball3 piece construction 338 speed dimple pattern for less drag and more lift that boosts overall distance and flies straight, even in the toughest wind conditions. Engineered with a firmer compression to optimize iron spin and distance. New fast layer core that starts soft in the center and gradually becomes firm around its edge that gives high speed players an exceptional feel for maximum distance. Designed with newer and thicker thermoplastic urethane.