Style# 101028 Who says flame-resistant clothing should be stodgy? Not us. Good looking and made from soft 6.5-ounce, FR twill (88% cotton/12% high-tenacity nylon), our classic plaid shirt features a button-down collar with button closure. There are FR melamine buttons throughout as well as two chest pockets with button closures. Carhartt FR and HRC 2 labels sewn on left pocket. Meets the performance requirements of NFPA 70E and is UL® Classified to NFPA 2112.