Carhartt WFRB159 Womens Flame Resistant Relaxed Fit Midweight Canvas Jean. 8.5 ounce FR canvas, a blend of 88% cotton and 12% high tenacity nylon. Relaxed seat and thighs. Contoured waistband eliminates gapping in back. Midrise waist for added comfort. Cell phone pocket and utility pocket. Left leg hammer loop. Arc resistant high tension snap closure at waist. Brass zipper fly with Nomex zipper tape. Two reinforced back pockets. Carhartt's famous triple stitched main seams. Straight leg openings fit over work boots. NFPA 70E and NFPA 2112 compliant. Flame resistant fabric by Mount Vernon Mills.