Carhartt Men's FRB229 Flame-Resistant Duck Loose-Original Fit Pant 13-ounce, 100% cotton FR duck Arc-resistant button closure at waist ; ATPV (CAL) Rating: 16.0 Full seat and thighs Brass zipper fly with Nomex FR zipper tape ; Meets NFPA 70E Compliant NFPA 2112 standards Sits at the waist Triple-stitched main seams ; HRC: 2 Multiple tool and utility pockets Leg openings fit over boots; Big and Tall sizes are an additional charge. Price will be stated next to selected size. Two reinforced back pocketsCarhartt FR label sewn on back pocket, HRC 2 label sewn on front waistband