Original fit, FR long sleeve button down shirt, made of 4.7 oz, 50% lenzing fr, 38% aramid, 10% polyamide, 2% antistat, unique honeycomb weave engineered for added breathability, inherently FR, easy care wrinkle resistant, engineered for 10% stretch for increased mobility on the job, anti-stat for cling-free comfort, tradesman double-layer pocket on left chest with back closure. . Meets NFPA 70E & UL Classified to NFPA 2112