FR MATRIALS:7OZ Cotton Knit FR Treated,FR Sewing Threads.2-inch Flame Resistant Silver Heat Seal Reflective trim!More area reflection on back and arm.Clear FR Tag on Front and More FR info on inside Tag about UL Certification.We Attached A Small Sample Inside Package for Cunstomers Simple FR Try FASION AND COMFIT:This FR Work Shirt Provides A Perfect And Comfortable Fit Also Soft And fashionable.We Did Prewash/ Preshrunk And Wrinkle-Free. ENSURE SAFETY AT WORK :This garments meets or exceeds the standards for HRC2,Arc Rating Atpv 11.6 Calories/cm2 and the requirements of NFPA2112 Standard on Flame Resisant Garments for Protection of industrial Personnel Against Flash Fire,2012 Edition.Also NFPA70E ASTM F1506 AND CAT II Cerfied! MULTI-USE:Made For Welders, Fitters, Ironworkers, Electricians, And Other Industrial Workers Safty Needs outside. It Can Be Used For Any Kind Of Industrial And Construction works. Our Workwear Pretect You Everyday And Help You Doing Heavy Works. MORE USE TIME: UP TO 100 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 100 times before FR still works.(NFPA2112,ASTM F1506,CAT II) This easy-wearing, hard-working 7OZ cotton FR High Vis Long Sleeve Comfortable Men's T-Shirt. Our shirts certified NFPA2112 in UL and CAT II.