13.75 oz. FR Denim; 100% cotton, Features: NFPA 2112; HRC 2; ATPV 20.0 calories/cm2, Compliant with OSHA 29 CFR 1910.269, NFPA-70E, ASTM F1506-02ael, Extra relaxed seat, thigh, and knee, Arc-resistant button waistband closure, High quality brass zipper with Nomex FR zipper zape, Flame resistant pocketing with reinforced back pockets, Nomex FR thread used in all garment seams, Safety orange outside ID for high visibility, Straight leg, Wrangler provides high-quality Fire Resistant clothing for the modern-day working man. These jeans are designed to self-extinguish and effectively prevent or greatly reduce the severity of burn injuries. The pockets are FR and these jeans have Nomex FR thread used in all the garment seams. You will enjoy the relaxed fit of these jeans that allow you to easily move about the work site. Put safety first when you dress in these jeans from Wrangler.