Certified NFPA2112--Flame Resistant clothing for protection of industrial personnel against short duration thermal.Exposures from fire in accordance with NFPA2112-2018 MAKE WORK SAFER-- Flash fires can cause serious injuries and burns without wearing flame resistant clothing. 100% Cotton FR Twill, 6.5oz NFPA2112,ASTM F1506,CAT II This easy-wearing, hard-working，Good quality and Nice color. 6.5 oz, 100% cotton FR Light Weight Long Sleeve Comfortable Men's Unifrom Shirt. Button-Down. FR Buttons. Our shirts certified NFPA2112 in UL and CAT II.