Genuine full-grain leather upper. Unlined. Classic Goodyear welt construction is sturdy and flexible. Removable Wolverine MultiShox® comfort gel insole adds extra cushioning. MultiShox® compression pads on outsole customize shock absorption. Fiberglass shank stabilizes foot, weighs 75% less than steel and reduces fatigue. Steel toe rated ASTM F2413-05 M I/75 C/75 EH.