Rocky 6104 S2V Steel Toe Duty Work Men's Work Bootsts Grey Leather Made in US Synthetic sole Uniform compliant (ar670-1), astm f2412/2413 protective toe classification, astm f2412/2413 electrical hazard standard Reduce injuries with roll-stop ankle stability, proprietary high-walled vibram soles are stitched to the upper, advanced s2v sieve technology circulates air in and water out Triple-stitched, flash & water-resistant leather upper, ptfe coated for flame-resistance Wicking dri-lex lining with aegis microbe shield, lycra tongue, fiberglass shank Berry compliant, gsa, cordura fabric, rocky airport cushion footbed