Made of 8.5-ounce FR canvas: a blend of 88% cotton and 12% high-tenacity nylon. 6.75-ounce FR quilt lining, FR modacrylic batting quilted to twill-face cloth. Pleated bi-swing back for greater ease of movement. Flapped back opening admits a lanyard for attachment to a safety harness. Two chest pockets with flaps and hook-and-loop closures. Two large lower pockets. Two inside patch pockets with FR hook-and-loop closures. Inner-sleeve Nomex rib-knit storm cuffs. Hook-and-loop adjustable cuffs cinch tight to fit under work gloves. Brass front zipper with Nomex tape plus inside and outside protective flaps with hook-and-loop closure for electric-arc protection. Under-collar snaps for optional FR hood. Carhartt FR label and HRC 3 label sewn on front left pocket. NFPA 70E compliant. Flame-resistant fabric by Mount Vernon Mills.