BRAND NEW ORIGINAL US ARMY ISSUE - MASSIF ACU NOMEX FLAME RESISTANT COMBAT SHIRT - LARGE Massif's flame-resistant combat shirts incorporate innovative fabric technology that increases protection from flame hazards while simultaneously reducing the combat load through added breathability, stretch, and a highly functional design. Designed for real-world conditions, Massif's combat shirts are extensively field tested and current designs integrate feedback from soldiers in the world's hottest combat zones.