Frank Bee military combat shirts are made for comfort but worn for protection. Perfect for military and tactical personnel in the field to wear under hot, heavy body armor and tactical vests, this combat shirt is made of a no melt, drip resistant fabric to withstand heat up to 230 degrees Fahrenheit. Its lightweight and breathable fabric wicks away moisture while keeping you dry. The 1/4 zip version of our combat shirts features a mandarin collar with front quarter zipper.