USGI US Military Polypropylene Cold Weather Long Underwear Sz Small OD 1990 81-G

These are genuine U.S.G.I. polypropylene cold weather drawers aka long underwear. Genuine U.S. Military Issued Thermals have the lowest thermal conductivity of any traditional apparel fiber. Polypropylene is also color fast, so it will resist fading and continues to look good, even in chlorinated climates.

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