Worn by All U.S. Flight Crews,made of 92% Meta Aramid, 5% Para Aramid, 3% Conductive Fibers,Two-Way Zipper with Pull, six Primary Pockets, adjustable Waist Belt with Velcro Fastener, Knife Pocket on Left Inseam, Pencil Pocket on left Sleeve, Gusseted Back and Flame resistant.