The Mizuno 2019 RB Tour X 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. Mid/low driver spin for flat to upward attack angles. COMPRESSION: Soft DRIVER SPIN: Mid/low GREENSIDE SPIN: High COVER: Urethane C-DIMPLE for reduced drag on the Mizuno 2019 RB Tour X 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.