COMPOSITE TOE: Asymmetrical, non-metallic carbon-fiber toes, a composite material, offer an unobtrusive fit and are 15% lighter than steel; The Philadelphia Wellington work boot meets or exceeds CSA Z195 Grade 1, ASTM F2412, 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 WATERPROOF: KEEN. DRY is a waterproof, breathable membrane liner that lets vapor out without letting water in keeping your feet dry and comfortable; The Philadelphia Wellington work boot does have a mesh liner that integrates with the waterproof membrane UNDERFOOT PROTECTION: Electrical hazard (EH) footwear provides a secondary source of protection from accidental contact with live electrical circuits; A flexible woven-textile puncture and isooctane chemical resistant midsole plate protect the underfoot ADDITIONAL FEATURES: 100% non-metallic construction for easily passing through metal detectors; Barnyard resistant leather helps resist the damaging effects of oleic acid, urea, sodium chloride, and ammonium hydroxide; 90° heel (5/8") provides stability