COMPOSITE TOE: Left and right asymmetrical, non-metallic carbon-fiber toes, a composite material, offer an unobtrusive fit and are 15% lighter than steel; The Chicago Oxford work shoe meets or exceeds ASTM F2412 and F2413 I/75 and C/75 Standards TRACTION: Oil- and slip-resistant, non-marking, rubber outsoles are used for improved traction that meet or exceed ASTM F1677 MARK II and ASTM F2913 SATRA Non-Slip Testing Standards; Lug sole patterns provide grip even on slick surfaces UNDERFOOT PROTECTION: Electrical hazard (EH) rated to provide a secondary source of protection in case of coming in contact with live electrical circuits; 90° heel (5/8") provides added stability; Heat resistant, rubber outsole rated up to 572° F / 300° C SUPPORT & COMFORT: Features KEEN. ReGEN technology; a lightweight, compression-resisting midsole that provides 50% more energy return than standard EVA foam making safety footwear more comfortable; CLEANSPORT NXT provides natural odor protection a. ADDITIONAL FEATURES: 100% non-metallic construction is used for easily passing through metal detectors in highly secured areas; Non-mutilating uppers reduce the chance of marking or scratching surfaces, specifically within auto manufacturing