ECWCS Polyester Thermal Long Underwear Tops w/Zipper

This is the heavy duty stuff! Thick, warm 100% Polyester with a fleece lining that wicks away sweat while providing plenty of insulating air pockets to keep you warm. Our warmest thermal underwear, they put cotton long johns to shame. These are not military issue, but are very similar to the military?s Extreme Cold Weather Clothing System (ECWCS).This thick underwear will help protect you in the coldest weather. Great for sitting in a tree stand, in a truck cab or working outdoors. Perfect for law enforcement and security.This listing is for a brand new thermal shirt with a zip-collar. The zip collar can be worn down, as pictured, or zipped up like a turtleneck for extra warmth.