Issued to soldiers. Condition - Used. The undershirt has long sleeves and a turtleneck that has a center front zipper which extends to the middle of the chest area. The zipper allows for ventilation at the neck and chest area. The underwear is made of a brown-colored (brown 436) knitted, brushed, multi-filament polypropylene terry-loop material conforming to MIL-C-44161.