Wellco Saftey Flight Deck Boots! Men’s size 5 Extra Wide. Like new! The Wellco B251 Black Navy Flight Deck Temperate Weather Steel Toe Boot is Navy Certified/Flight Deck Approved. The full grain leather Wellco B251 Navy Boot provides an athletic feel with a premium removable polyurethane footbed and a Vibram® outsole. With a waterproof membrane the comfort continues on into wet conditions to help keep you dry. In regards to protection, the Wellco B251 Navy Boot provides a steel toe meeting the ASTM F2412-05 and F2413-05 Standards.