The Mizuno 2019 RB Tour Balls (Dozen) is a faster tour ball with incredible performance in the wind. This is because of Mizuno’s drag reducing C-Dimple. As a result, you get a ball that is soft and responsive around the greens. The ball features a 4-piece construction with a high traction urethane cover. Low driver spin for downward attack angles. COMPRESSION: V Soft DRIVER SPIN: Low GREENSIDE SPIN: High COVER: Urethane C-DIMPLE for reduced drag on the Mizuno 2019 RB Tour Balls (Dozen). Mizuno’s new Cone (C) Dimple is the result of 12 years wind tunnel testing at Mizuno’s MT (Mizuno Technics) test facility. The C-Dimple creates more trigger points to keep fast flowing air close to the ball’s surface for longer. Simultaneously reducing drag and strengthening trajectory. Under laboratory testing a configuration of 360 Cone Dimples was discovered the most effective at producing a controllable, penetrating driver flight, and noticeable distance gains on full iron shots.