12.5 oz. Denim; 70/30 Cotton/ Modacrylic, Blue, Wrangler Cool Vantage Regular Fit Jean, NFPA 2112 pending; ATPV 15.0 calories/cm2, Compliant with OSHA 29 CFR 1910.269, NFPA-70E, ASTMF1506-02ael, High quality brass zipper with Nomex FR zipper zape, Reinforced back pockets, Fits over boots, Safety orange outside ID for high visibility and cooling FR, According to recent government reports, the leading cause of severe and fatal injuries on the job is the continual burning of clothing after ignition, not the source of the ignition itself. These Wrangler jeans are designed to self-extinguish to effectively prevent or greatly reduce the severity of burn injuries. These FR jeans have the authentic five-pocket styling, a more comfortable waist, an arc-resistant button waistband closures, FR pocketing, and Nomex FR thread used in all garment seams. Make safety your number one priority and wear these jeans from Wrangler on and off your work site.