COMPOSITE TOE: Left and right asymmetrical, non-metallic carbon toes, a composite material, offer an unobtrusive fit and are 15% lighter than steel; The Targhee Blur work boots for men meet or exceed ASTM F3445 and F2413 M I/75 and C/75 Standards CONSTRUCTION: 100% non-metallic construction for easily passing through metal detectors in highly secured areas with ease; Shank for midfoot support; Reflective webbing for additional safety and visibility WATERPROOF: KEEN.DRY is a waterproof, breathable membrane liner, keeping your feet dry and comfortable; A mesh liner provides breathability to help keep feet cool in warm environments 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; Heat-resistant rubber outsole rated up to 572°F/300°C COMFORT: KEEN.ReGEN+ midsole is lighter and more compression-resistant, providing over 60% energy return for a more responsive feel; Removable metatomical insole for additional comfort and support