was wondering if its worth while for -40...
was wondering if its worth while for -40 weather. and what size for 6'4" 190
This jacket has a good amount of insulation and good (not amazing) waterproofing. It will keep you toasty in really cold weather, but you still might consider wearing a base layer, like a fleece, underneath on the coldest days. Hope that helps.
For a dude your size, the large will fit properly. if you'd like some extra room, choose the XL.