These men's canvas work pants take durability one step further with a certified flame-resistant rating. The midweight canvas maintains its comfortable feel and light stretch for easy movement. Dedicated phone and utility pockets keep essentials within reach. The relaxed fit gives you enough room to bend, squat, and get the job done.9-ounce, 98% cotton / 2% spandex canvasMeets the performance requirements of NFPA 70EUL® Classified to NFPA 2112Built to move with Rugged Flex stretch technologyComfortable fit through the seat and thigh with more room to move and a straight leg openingStrong sewn-on-seam belt loopsRight-leg secured cell phone pocketLeft-leg utility pocketCarhartt FR and NFPA 2112/CAT 2 labels sewn on coin pocket