9-ounce, 98% cotton / 2% spandex FR canvas Meets the performance requirements of NFPA 70E /ASTM F1506 UL® classified to NFPA 2112 Built to move with Rugged Flex® stretch technology Sits slightly below the waist; comfortable fit through the seat and thigh with more room to move and a straight leg opening Reinforced front slash pocket Strong sewn-on-seam belt loops Right leg secure cell phone pocket Carhartt FR label sewn on back pocket NFPA 2112 / CAT 2 label sewn on front waistband Imported