Hello Katherine and crew! We just hit -100 F here today at the South Pole. Just sending a quick picture of the official Weather computer readouts and Col d'Lizard. A couple of us here have the Windbloc Jackets and wear them everyday. The coat rocks! Just thought we would let you know that it has been worn outside as a main coat in temperatures as cold as -156 F (includes windchill!) Its a great coat for wearing around underneath the Dome (-70's) and short trips elsewhere.