A. Compared with rubber core, resin core is lighter and faster. Applying resin core to ball design not only enhances the ball performance in many ways, but also helps the nature-caring with fully recyclable materials.
B. High MOI (moment of inertia): A feature only for balls with resin inner core + rubber outer core, such as RZN Pro and RZN Distance. This technology grants the ball with a piercing and stable flight, especially in windy conditions.