The Mizuno Pro S-4 irons represent the evolution of Mizuno's renowned forging craftsmanship, blending the refined precision of a player's iron with enhanced forgiveness and stability. Designed for golfers who demand exceptional feel without sacrificing playability, the Pro S-4 features a slightly more forgiving profile with graduated offset, a wider sole, and a deeper center of gravity for improved launch, consistency, and control. A lower sweet spot further enhances performance from a variety of turf conditions and strike locations, while preserving the compact shaping, soft feel, and shot-making versatility expected from the Mizuno Pro series.Grain Flow Forged HD: One-piece Grain Flow Forged HD from 1025E Pure Select mile carbon steel at Mizuno's iconic facility in Hiroshima, Japan. Where Mizuno irons have been produced since 1968.Harmonic Impact Technology: Fine tuned head geometry delivers ideal impact feel and feedbackTriple Cut Sole : Beveled trailing edge and blunted leading edge ensures clean turf interaction for solid contact.White Satin Brush Finish: A modern elegant, yet durable non-glare finish1025E Pure Select : Six times tighter tolerance than industry standard for greater purity.Copper Underlay: Thin copper layer beneath a nickel chrome to provide a further enhanced impact feelCompact Player's Profile: Dramatically reduced topline and blade length throughout the set.