Ariat Women's FR Air Crew Long Sleeve Tee Shirt - Purple Ash HeatherFlame resistant Greater Arm Mobility helps extend arm and shoulder range of motion so you can move freely Crew neck Ribbed collar and cuffs Chest pocket with hook and loop closure CAT 2 Rating for dual hazard flame resistant workwear to help protect against flash fire and electrical arcs ARC Rated: 8. 7 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