We still have a few scorching days of summer yet to endure, and this shirt is made of No Melt, No Drip CORDURA® Baselayer fabric, a 60/40 cotton nylon blend that not only reduces the severity of burn injuries and helps protect against flash fires, but also breathes, wicks away moisture and dries quickly. Once you try it, you won't want to go back to your stifling old BDU coat. They also fit nicely under a vest, and won't bunch up like a conventional uniform shirt. Sizes up to 3XL. Please check it out in our store! Thanks.