C:25 is a multilayer golf ball and is perfect for players looking for distance, soft feel and shot-stopping spin. High Velocity, High Speed Construction The games softest core utilizes advanced rubber chemistry to maintain maximum initial velocity; A firm, speed-generating HPF mantle generates higher spin; Thin, responsive ionomer cover delivers soft feel, especially greenside, with improved durability. PhD Aerodynamics Large, flat-bottomed, shallow dimples deliver stable, penetrating ball flight.