*Waterproof full-grain leather upper *KEEN. DRY waterproof breathable membrane *Mesh and moisture-wicking textile lining *Removable metatomical PU footbed *KEEN Luftcell air-infused PU midsole for weightless comfort *TPU shank for midfoot support *Oil- and slip-resistant non-marking siped rubber outsole disperses liquid quickly for increased traction *Left and right asymmetrical aluminum toes weight 35% less than steel and offer a sleek appearance *Meets ASTM F1677-96 MARK II Non-Slip Testing Standards *Meets ASTM F2913-19 SATRA Non-Slip Testing Standards *Meets ASTM F2412-18 and F2413-18 M I/75 C/75 EH standards *Midsole meets ASTM D471-06 903# oil and isooctane chemical resistance standards *Electrical hazard (EH) or Electric Shock Resistant (ESR) footwear provides a secondary source of protection in case of accidental outsole contact with live electrical circuits