KEEN Utility Men's Cincinnati Wellington Carbon-Fiber Toe Work Boot Combining a durable Barnyard Resistant full-grain leather upper with a convenient Wellington pull-on design, this boot is ready to take on anything from the farm to the worksite and so much more. With asymmetrical carbon-fiber toes and an air-infused KEEN LuftCell midsole, this work boot offers easy-wearing comfort and support with every step, all-day long. KEEN Utility Men's Cincinnati Wellington Carbon-Fiber Toe Work Boot