Now that part is easy to answer: You dress thin for high intensity activity - like running. The outfit works like a charm for what it is designed to do: Venting away excess moisture and providing adequate wind block and insulation for a body working at high intensity in cold air. Of course, unless you bring along extra clothes this outfit will leave you with close to zero margin for error if you for some reason have to stop. Even just being forced to go slower will be troublesome because your heat production will not match the heat loss.


Why anyone would venture out in the mountain dressed like that is beyond me. A mountain hike in winter is NOT jogging in the park in winter. But we see the same here in Norway: Lots of people use skiing track suits when they go skiing in the mountains, and I see very little room for backup clothes and other emergency equipment in their puny little daypacks....