My dear fellow. Common wisdom says "slim" is not good for best warmth. Loose fitting clothing gives the best warmth, except for the base layer longies - fashion police notwithstanding.
Once again, the common wisdom may be wrong. I guess it depends on how loose is "loose." As a card-carrying skinny guy, I find that closer-fitting jackets are warmer, as long as they have enough room for a few layers underneath. Looser clothing allows too much air movement between the layers...kind of a bellows effect. And, of course, if it's true for me, then it must be true for everybody else <img src="/forums/images/graemlins/smile.gif" alt="" />
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