Our flame-resistant twill shirt with pocket flaps works as hard as you do. Made of 7-ounce, flame-resistant twill, it features two chest pockets with flaps and button closures, flame-resistant melamine buttons and a button-down collar. It also has triple-stitched main seams and a shaped shirt tail. 7-ounce, lightweight, flame-resistant twill NFPA 70E compliant Flame-resistant melamine buttons