7-oz. flame-resistant twill fabric is a blend of 88% cotton and 12% high-tenacity nylon.. Two chest pockets with flaps and button closures. Extended sleeve plackets with two-button cuffs. F.R. melamine buttons. Button-down collar with button closure. Triple-stitched main seams. Shaped shirt tail. HRC 2 label sewn on left-chest pocket. NFPA 70E compliant. Carhartt FR label sewn on left-chest pocket. Flame-resistant fabric by Mount Vernon Mills. Imported.