Left and right asymmetrical, non-metallic carbon-fiber toes offer unobtrusive fit and are 15% lighter than steel KEEN.DRY waterproof, breathable membrane Electrical hazard (EH) rated - providing a secondary source of protection in case of accidental contact with live electrical circuits Heat resistant, rubber outsole rated up to 572° F / 300° C 90° heel (5/8" Height) provides stability and helps "catch or lock" the foot in place 100% non-metallic construction for easily passing through metal detectors in highly-secured areas Nylon shank for midfoot support Non-mutilating upper reduces the chance of marking or scratching surfaces KEEN.ReGEN: A lightweight, compression-resisting midsole providing 50% more energy return than standard EVA foam Contoured heel lock helps "lock" is anatomically shaped, "locking" it in place and reducing heel slip
