11.75-ounce 100% cotton FR denim - Full seat and thigh - Sits slightly below the waist - Garment washed for a soft finish - Arc-resistant button closure at waist - Brass zipper fly with Nomex FR zipper tape - Multiple utility pockets - Two reinforced back pockets - Triple-stitched main seams - 19" leg opening fits over work boot - Carhartt FR label sewn on back pocket; NFPA 2112/CAT 2 label sewn on front waistband - Meets the performance requirements of NFPA 70E standards and is UL Classified to NFPA 2112 - CAT - 2 - ATPV(CAL/CM2) - 16