Left and right asymmetrical, non-metallic carbon-fiber toes offer unobtrusive fit and are 15% lighter than steel KEEN.DRY waterproof, breathable membrane ASTM/CSA-certified, non-metallic, flexible woven-textile puncture resistant midsole plate for underfoot protection Reflective webbing for additional safety and visibility Secure fit lace capture system Nylon shank for midfoot support Electrical hazard (EH) or Electric Shock Resistant (ESR) footwear provides a secondary source of protection in case accidentally coming into contact with live electrical circuits Environmentally preferred premium leather from LWG-Certified Tannery PFC-Free, durable water repellent MATERIALS TecTuff® bonded coating with more abrasion resistance than leather Locking non-metallic lace hooks Mesh liner provides breathability to help keep feet cool in warm environments Removable metatomical PU footbed KEEN.ReGEN: A lightweight, compression-resisting midsole providing 50% more energy return than standard EVA foam Oil- and slip-resistant non-marking rubber outsole