•8.5-ounce, 88% cotton/12% high-tenacity nylon FR canvas •Meets the performance requirements of NFPA 70E/ASTM F1506 •UL® classified to NFPA 2112 •Sits at the waist •Our roomiest cut with a generous fit through the seat and thigh and a straight leg opening •Triple-stitched main seams •Arc-resistant button closure at waist •Carhartt FR label sewn on back pocket