The windproof materials and design also shield you from the elements

DLT (Descending Loft Technology) delivers consistent launch angles regardless of shaft lean at impact which leads to more consistent and predictable rolls

accessories and more

Calvin Klein badge logo on the front

Japanese craftmanship

Callaway Quantum Max OS Single Irons - Graphite Shaft:Stiff - Denali Frost Silver 70g The windproof materials and designQuantum Max OS blends confidence with maximum forgiveness, powerful speed, and consistent carryall in an oversized shape designed to help golfers hit it more solid across the face. The Modern 360 Undercut Cavity is designed to deliver faster ball speeds, higher launch, and more forgiveness across the face, thanks to its advanced two piece design with extreme perimeter weighting and a fully exposed undercut for added flex where golfers need it most.