MIL-U-44164A, MILITARY SPECIFICATION: UNDERSHIRT, COLD WEATHER, POLYPROPYLENE (25-JAN-1989) [S/S BY A-A-55246]

MIL-U-44164A, MILITARY SPECIFICATION: UNDERSHIRT, COLD WEATHER, POLYPROPYLENE (25-JAN-1989) [S/S BY A-A-55246]., This specification covers a polypropylene undershirt used as a component of the extended cold weather clothing system.