Stay comfortable even when the environment isn't. Designed to fit your body, these are the best FR jeans you'll ever wear. The intricate back pocket and hand-sanded details add style; our durable denim gives you the lightweight protection you need.* CAT 2 - Rating for dual-hazard flame resistant workwear to help protect against flash fire and electrical arcs*18 cal/cm2 Rated to protect from second degree burns when exposed to an electrical arc.*NFPA 70E - Meets NFPA 70E/ASTM F1506 performance requirements*NFPA 2112 - UL classified to NFPA 2112