Drawstring Cord Adjustment

Speed indicator & Battery meter

hood lining: 100% cotton

and roomy pockets add versatility

with a matching ball marker

Callaway Quantum Max OS Irons - Steel Clubs:5-PW+AW+SW (8 Irons) Drawstring Cord AdjustmentQuantum 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.