Belleville 700 boots are waterproof flight boots approved for use by the United States Air Force and United States Army. Due to their nature as military footwear, they are only available in black. These heavy-duty boots include a polyurethane midsole and rubber outsole. They feature Gore-Tex fabric bootie that keeps feet dry. The upper material is a leather and nylon combination fabric, designed for a standard military height of eight inches. The boots are the right choice for any individual looking for flight approved boots for use in the military or for those who frequently participate in rugged, all-terrain adventures.