Belleville 770Belleville 770 insulated combat flight boots are ideal for those who spend time outdoors. These tough boots are made to last with the durable leather and nylon uppers that are built to take a beating. Approved by the U.S. Air Force, Belleville 770 boots are constructed to provide the comfort of a running shoe and the performance of a full grade military boot. The sole is similar to that of a sneaker with the added bonus of a polyurethane outsole designed to improve traction in icy conditions. The interior lining is Gore-Tex and Thinsulate with moisture-wicking properties to keep the wearer's feet cool and dry at all times.