5.5OZ Cotton Knit FR Treated,FR Buttons,FR Sewing Threads!Clear FR Tag on arms and bottom front. This FR Work Shirt Provides A Perfect And Comfortable Fit Also Soft And fashionable.We Did Prewash/ Preshrunk And Wrinkle-Free. This garments meets or exceeds the standards for HRC2,Arc Rating Atpv 8Calories/cm2 and the requirements of NFPA2112 Standard on Flame Resisant Garments for Protection of industrial Personnel Against Flash Fire,2012 Edition. UP TO 50 WASHES ,Our shirts has the appropriate level of protective gear and stays enforced up to numerous washes.You can wear and wash it over and over again for up to 50 times before FR still works.(NFPA2112,ASTM F1506,CAT II) Made For Welders, Fitters, Ironworkers, Electricians, And Other Industrial Workers Even At Home.It Can Be Used For Any Kind Of Industrial And Construction works. Our Workwear Pretect You Everyday And Help You Doing Heavy Works. This easy-wearing, hard-working 5.5OZ, 100% cotton FR henley knit T-Shirt wicks away sweat for comfort and fights odors. Three Buttons. It features a rib-knit crewneck collar. Our shirt meets the performance requirements of NFPA 70E and NFPA 2112.