Long Sleeve Tagless Henley Shirt - CAT 2 - SEL2 CAT 2 Protection: Arc Rating ATPV 8.9 calories/cm2 Flame-resistant 7.25 oz. interlock FR 100% cotton Button-front closure FR cotton rib knit cuffs and collar Care: Home Wash Certified by Underwriters Laboratories to meet the requirements of NFPA® 2112 Standard on Flame Resistant Garments for Protection of Industrial Personnel Against Flash Fire, 2012 Edition.