This top is very warm. Good to wear under clothing in cold days. I haven't actually skied in it yet, but I thing it will work. I am a small, but I got a medium, and it seems to be true to size since it's a bit big on me.
I went skiing for 3 days in Jackson Hole, Wyoming (one of the coldest places I know of) in these and I've never been warmer. The are thick but not bulky and so soft! I am 5ft 3in, 120lbs and the small fit me perfectly!
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