Putting an athletic spin on one of our favorites, our Flint II Sport features carbon-fiber safety toes, an innovative KEEN.ReGEN cushioning midsole which offers a 50% energy return with every step, KonnectFit heel-capture system for a more locked-in feel, and a highly slip-resistant, EH-rated rubber outsole. This work shoe is ready to take on warehouses, roofs, tarmacs, and most light manufacturing. Men's Flint II Sport Carbon-Fiber Toe Work Boot