I'm a snowshoer and year round fly fisherman and here in New England we get some challenging weather. That said, this parka doesn't even start to "cook" until the temperature hits single digits! Amazingly warm, highest quality - the only negative is the two way zipper, which is tricky to engage. If this parka was used as a belay jacket for climbers, cold fingers might have a problem dealing with it...
This review was written in the old system and had content requirements that are different than reviews written today.