Crafted with obsessive detail to performance and style, ZXiR blends completely new materials and cavity back construction with signature Srixon aesthetics for a game improvement model that feels even better than it looks. i-ALLOY i-ALLOY is a brand-new steel with better feel, created by Srixon. It's significantly softer than the 431 steel commonly used in this category, as well as less dense, while still meeting the strength and durability needs Srixon demands. MAINFRAME MainFrame saves additional weight and adds more MOI through an enhanced milled pattern on the back side of the Iron face. At impact, this system amplifies ball speed and adds forgiveness. SIGNATURE SRIXON SHAPING ZXiR Irons advance Srixon's renowned design aesthetics into the game improvement space, while also cosmetically aligning with the entire ZXi Iron family-featuring premium, cavity back badging, confidence-inspiring shaping, and clean topline address profiles. TOUR V.T. SOLE Srixon's Tour V.T. Sole's proprietary combination of sole widths, bounce angles, and notches to ensure a smooth glide through fairway, rough, and sand without any loss of speed.