I have to say that this jacket does an amazing job at keeping me warm. I used it a few times in the cold fall here in Bend, OR on the trail. Temps varied between the 20's to 40's. Then last week I wore it while splitboarding and it was pre-dawn, snowing and windy, in the teens and I wore a underarmour and a midweight shirt underneath. I was sweating while touring. I definitely won't need more than that jacket for anything. This jacket is high quality gear at an affordable price.