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Pro S-1 Irons

The Mizuno Pro S-1 irons are pure muscle backs, designed for players who demand ultimate precision and
workability. At the core of the Mizuno Pro S-1 is Mizunos Grain Flow Forged HD process, carefully executed
in Hiroshima, Japan. Forged from a single billet of 1025E Pure Select Mild Carbon Steel, the S-1 delivers the
unmistakably soft and responsive feel through impact that Mizuno is globally known for. The inclusion of a
copper underlay further optimizes this experience, subtly refining vibration patterns to produce the purest,
most satisfying feedback.

Developed and tested with input from tour professionals, the S-1 incorporates a Channel Back Design that
redistributes mass for greater vertical stability and a more consistent center of gravity. This design works
seamlessly with Mizunos Harmonic Impact Technology, which fine-tunes the feel by adjusting the clubs vibration
frequencies to deliver even more responsive feedback.

Further Optimized Grain Flow Forged
HD (High Density)

The S-1 iron is masterfully Grain Flow Forged
HD from a single billet of 1025E Pure Select Mild
Carbon Steel in Hiroshima, Japana testament
to Mizunos heritage in precision forging. This
advanced forging process creates a tighter grain
structure, delivering the brands legendary
buttery-soft feel through impact, while enhancing
feedback and consistency across the set.

Channel Back Design

The innovative Channel Back Design subtly
repositions mass behind the face to achieve a
more stable vertical center of gravity, resulting
in consistent launch conditions. Simultaneously,
it offers a slightly more solid, tour-preferred
sensation, enhancing responsiveness without
sacrificing the purity of feel.

Harmonic Impact Technology (H.I.T.)

Mizunos proprietary Harmonic Impact
Technology works in tandem with the channel
back geometry to fine-tune vibration frequencies,
delivering a satisfyingly solidimpact sensation.
Its engineered for players who desire auditory
and tactile feedback that inspires confidence with
every strike.

Copper Underlay

A thin layer of copper beneath the chrome
plating, adds a layer of nuance to the feel at
impact. This feature subtly softens vibration,
enriching the feedback while maintaining a
crisp response. Paired with H.I.T., it creates
what Mizuno describes as the ultimate sensory
connection between golfer and club.

Tour-Tested and Confirmed
Sole Geometry

The S-1 sole has been carefully refined through
tour input, featuring a flatter camber profile,
sharpened leading edge, and increased bounce
angle. This design ensures smoother turf
interactionparticularly beneficial for shallower
swingsminimizing digging and allowing players
to maintain aggressive angles of attack with
confidence

Soft White Satin Finish

The irons are finished in a sophisticated Nickel
Chrome Soft White Satin, offering a premium,
tour-inspired aesthetic. Beyond its visual appeal,
the satin treatment effectively reduces glare at
address, promoting unwavering focus and visual
clarity in all lighting conditions.

SPECIFICATIONS

WARNING: Products sold on this website may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65warnings.ca.gov