Genuine USAF Issue. F1-B Flight Trousers. Sets the standard for extreme cold weather gear. Comes with elastic adjustable suspenders, and calf-high zippered legs, for easy on/off. Two thigh pockets, and two seat pockets. Water repellent outer shell combined with 60% wool / 40% cotton insulation, make these the warmest, most comfortable trousers made anywhere at any price. "When you're working outside your aircraft in Thule, Greenland for 8 hours straight and the thermometer reads minus 50, this is what you wear." These are new old stock with some shelf-wear. All have small water stains and /or masking tape residue where they were rolled and taped together by the government for long term storage, but are perfectly intact and ready to perform.