Made from polyester, the Under Armour Tactical Tech Short Sleeve Shirt is a good choice for when you are engaged in active duty in hot climates. Originally designed to be a training t-shirt it works well as a base layer under a uniform or other tactical gear required during active duty. The shirt is made with a smooth flatlock seam construction and features an ultra-soft material to keep you comfortable and your movements flexible. It includes moisture transport and anti-odor technologies to keep you dry and your garment protected from odor-causing microbes. Please note that when this garment is exposed to open flames or high levels of heat it will melt and this could cause serious injury when in contact with skin. Imported.