Soft feel, longer carry, and a high, stable trajectory. The Mizuno RB 566 (2024 model) is Mizuno's softest-compression golf ball, paired with a unique 566 micro-dimple design engineered to delay the rate of descent past the apex of flight. Its large, high-energy core reduces driver spin and elevates launch for a more efficient, stable ball flight, while the innovative dual and micro-dimple pattern extends hang time so the ball stays in the air longer and adds metres of carry. Now available in a high-visibility bright orange colour, the RB 566 is the ideal choice for golfers with low to mid swing speeds who want more distance without sacrificing soft feel.
The RB 566's aerodynamic story centres on two complementary dimple technologies working together. The Dual Dimple places a small secondary depression inside each primary dimple, which slows the air velocity travelling along the surface to generate additional lift. Surrounding these are Mizuno's Micro Dimples — tiny supplementary dimples that become increasingly effective as the ball decelerates past the apex of its flight. Together, the full array of 566 dimples reduces drag, optimises spin, and delays the rate of descent, keeping the ball airborne for longer and translating directly into additional carry distance. The result is a more penetrating, stable ball flight that particularly benefits golfers with mid to low swing speeds.
At the heart of the RB 566 is a large, high-energy core engineered to balance two seemingly opposing qualities: soft feel and ball speed. The low 60-compression rating means the core deforms easily at impact, producing the marshmallow-soft sensation that slower swing speeds thrive on. At the same time, the new core formulation recovers energy efficiently, promoting faster launch velocities and a higher initial trajectory. The net effect is that the RB 566 feels noticeably soft off every club in the bag — from driver to putter — while still delivering the distance performance that recreational golfers need to score well.
The RB 566 is wrapped in a resilient ionomer cover that strikes a careful balance between short-game responsiveness and long-term durability. Ionomer provides a slightly firmer sensation at the surface compared to urethane, but it offers significantly better cut and scuff resistance — meaning the ball looks good and plays consistently across many rounds. Around the greens, the cover generates workable short-game spin for chips, pitches, and bump-and-runs, giving recreational players the confidence to attack pins. Its all-weather resilience makes the RB 566 a dependable choice for year-round play in variable conditions.
The RB 566 is engineered for a stable, mid-height flight path that works efficiently across a wide range of course conditions. With the driver, the large core actively reduces spin, helping golfers with moderate swing speeds achieve longer, straighter tee shots with less side-spin deviation. On approach shots and around the greens, the ball transitions to a higher spin regime, providing the stopping power and control needed to hold greens. This dual-mode performance profile — low spin off the tee, controllable spin on shorter shots — makes the RB 566 a genuinely versatile all-round ball for the everyday golfer.
The vivid orange finish of the RB 566 is far more than a cosmetic choice — it is a practical performance aid. High-visibility orange makes it significantly easier to track the ball in the air against overcast skies, follow its roll on fairways, and spot it quickly in rough, long grass, fallen leaves, or wooded areas. Golfers who play in autumn conditions or low-light environments will particularly appreciate the advantage. The bold colour retains full conformance with the Rules of Golf, so you can enjoy better visibility without any compromise on performance or legality.
The Mizuno RB 566 is specifically designed for golfers with swing speeds below approximately 95 mph — a category that includes the vast majority of recreational players, seniors, and higher-handicappers. At 60 compression, it is Mizuno's softest ball and sits at the value end of the Mizuno range, offering premium aerodynamic technology at an accessible price point. Whether you are stepping up from a no-name distance ball or looking for a softer alternative to your current game-improvement ball, the RB 566 delivers a noticeable improvement in carry distance, feel, and overall playability throughout the bag.
| Specification | Detail |
|---|---|
| Model | Mizuno RB 566 (2024) |
| Construction | 2-piece |
| Compression | 60 (soft) |
| Cover Material | Ionomer |
| Dimple Pattern | 566 dimples — Dual Dimple + Micro-Dimple design |
| Trajectory | Mid |
| Driver Spin | Low |
| Short-Game Spin | Mid–High |
| Colour | Orange (high-visibility) |
| Pack Quantity | 12 balls (1 dozen) |
| Recommended Swing Speed | Up to ~95 mph (low to mid swing speed) |
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