Wrangler FR garments are designed to self-extinguish to effectively prevent or greatly reduce the severity of burn injuries. Wrangler FR products were created to meet the rigorous requirements of the major protection agencies. Authentic five-pocket styling. More comfortable waist. Arc-resistant button waistband closures. High-quality brass zipper with Nomex FR zipper tape. Flame Resistant pocketing. Reinforced back pockets. Nomex FR thread used in all garment seams. Fits over boots. Safety orange outside ID for high visibility. Compliant with OSHA 29 CFR 1910.269, NFPA-70E, ASTM F1506-02ael. NFPA 2112; HRC 2; ATPV 17 Calories/cm2.