Keen Utility Philadelphia *Internal Met Guard* CSA Boot in cascade brown/black. Left and right asymmetrical, non-metallic carbon-fiber toes offer unobtrusive fit and are 15% lighter than steel KEEN.DRY waterproof, breathable membrane Full-grain waterproof leather Oil- and slip-resistant non-marking rubber outsole Electric Shock Resistant (ESR) footwear provides a secondary source of protection incase accidentally coming into contact with live electrical circuits Internal, lightweight XRD® Metatarsal Guard for enhanced impact protection KEEN.POLAR TRACTION: Micro-glass fibers create a "micro cleat" effect for increased ice traction* Non-metallic, flexible woven-textile puncture resistant midsole plate - ASTM/CSA certified 3/4 Goodyear welt construction for enhanced durability and flexibility under extreme working conditions KEEN LUFTcell dual-density PU midsole, infused with air for weightless comfort Barnyard Resistant Leather Heat resistant, rubber outsole rated up to 572° F / 300° C KEEN Luftcell: Air-infused, PU midsole for weightless comfort Mesh & Moisture-Wicking Textile Removable, dual-density PolyAer PU footbed with aerated pillow-top cushioning. Style Number: 1022091