KHAKI - LARGE - SAF-TECH Flame Resistant (FR) DRESS SHIRT - 4.5oz. NOMEX IIIA Button Front FR Dress Shirt. HRC 1 - Perfect for Front Office Personell who spend time on site FR Flame Resistant Dress Shirt - MADE IN THE U.S.A. 4.5oz. NOMEX IIIA Button Front FR Dress Shirt. FR for the Life of the Shirt HRC 1 - ATPV=4.8 cal/m2 The finest FR workshirt you'll ever own