Mizuno Pro M-15 Irons Boast Hollow-Body Cavity Forgiveness (Reviewed)

Mizuno M-15 irons are new for 2026 as the next generation of the Pro 245 with an improved hollow-body cavity design.

Part of an extended Pro Series of irons, the M-15 is joined by the M-13 as a newcomer for 2026 with the two models accompanying the S-1 irons and S-3 irons that were launched in 2025.

The M‑15 is the more forgiving hollow‑body hot players iron that appeals to a wider range of golfers and takes over the role of the Mizuno Pro 245 with more speed and launch help.

They have a progressive hollow‑body design with a Grain Flow Forged Chromoly face and stainless body in the 4-iron to 8-iron and a partial hollow 1025E Grain Flow Forged body with a stainless back in 9-iron and wedges.

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Pros & Cons

✅ Exceptional forgiveness from hollow-body construction, tungsten weighting (over 50g low in long/mid-irons), and variable face thickness, boosting ball speed and stability on off-center hits
✅ Higher launch and added distance, particularly in 4-8 irons, making long shots more playable
✅ Sleek aesthetics and progressive design maintaining a soft forged feel appealing to low handicappers
​❌ Feel is good but slightly less buttery or pure than traditional Mizuno Pro models like the M-13, feeling a bit flat on pure strikes
​​❌ Distance gains are modest not revolutionary despite stronger lofts, requiring careful gapping
​❌ Best for skilled players – mid-to-high handicaps might still find them demanding in short irons

Mizuno Pro M-15 Irons Specs & Design

The M‑15 replaces the Pro 245 irons and Mizuno have focused on higher launch and more stability through the back of this new model.​

The M‑15 irons have a progressive hollow‑body design with a Grain Flow Forged Chromoly face and stainless body in the 4-iron to 8-iron.

The long irons have a Contoured Ellipse Face style design with a multi‑thickness face and internal tungsten weighting for ball speed and stability.

Contour Ellipse Face technology works via an elliptical pattern from heel to toe and the result is more face flex and ball speeds than in previous generations.

In the 9‑iron, pitching wedge and gap wedge the head shifts to a partial hollow 1025E Grain Flow Forged body with a stainless back, raising CG for lower, more controllable launch in the scoring clubs.

The M-15 also features refined sole design with added bounce compared to the Pro 245 to encourage a cleaner entry and smoother exit through the turf.

Mizuno’s Harmonic Impact Technology and copper underlay add to the feel of the irons, which are finished in Premium Nickel Chrome Satin.

The M-15 irons are available in 4-iron (20 degrees) to Gap Wedge (48 degrees).​

Mizuno M-15 Irons Review: Are they any good?

The M-15 irons are a refined successor to the Pro 245, delivering modern speed and forgiveness in a players’ profile that low-handicap golfers will love for its launch stability and aesthetics.

While the feel trade-off keeps it from perfection, the progressive construction smartly balances power in longs with precision in shorts, making it a top pick for ball-strikers needing help in the bag’s longer end without looking game-improvement bulky.

If ultimate softness trumps forgiveness, the M-13 might edge it. But the M-15’s tungsten-lowered CG and contour ellipse face genuinely shrink dispersion and make them much more forgiving and accurate.

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FAQs

What is the 2026 Mizuno M-15 irons release date?

The new irons were released in January 2026 along with the M-13 model, joining the previously released Pro S-1 and Pro S-3.

How much do Mizuno Pro M-15 irons cost?

The irons retail at around $250 per club.

What are the Mizuno M-15 specs?

The M-15 irons are available in 4-iron (20 degrees) to Gap Wedge (48 degrees).​