The RB566 and RB566V both feature a unique 566 dimple pattern for prolonged flight. Each with a large, high energy cores that reduce driver spin and elevate launch for a more efficient, stable performance. Mizuno’s softest compression ball matched with 566 micro-dimple design – engineered to delay the rate of descent past the apex of flight. Stable, mid trajectory with the driver and nimble around the greens. Feel: Soft Trajectory: Mid Short Game Spin: Mid/high Spin on driver: Low