COMPOSITE TOE: Left and right asymmetrical, non-metallic carbon toes, a composite material, offer an unobtrusive fit and are 15% lighter than steel; The Overton work shoes for men meet or exceed ASTM F3445 and F2413 M I/75 and C/75 Standards TRACTION: Oil- and slip-resistant, non-marking, rubber outsoles that meet or exceed ASTM F1677 MARK II non-slip, and ASTM SATRA TM31 material abrasion testing standards; Non-mutilating uppers reduce the chance of marking surfaces COMFORT: Made with KEEN.ReGEN a lightweight, compression-resisting midsole providing 50% more energy return than standard foam, and a contoured heel-capture system for a locked-in feel, lasting support, and comfort MATERIALS: Featuring textile uppers that meet ASTM D471 #903 standards for oil and isooctane chemical resistance, and have 100% non-metallic construction for passing through metal detectors; A nylon shank used for midfoot support, and torsion stability WATER RESISTANT: Moisture-wicking textile lining transports moisture away from feet; Water-resistant textile provides a barrier against liquid absorption and helps preserve the quality of the shoes over time