Patagonia Houdini Full-Zip Jacket
Did exactly as advertised.
I'm 6'2", 210. Bought an XL. It is slim cut but fits over 3 layers.
I used it Feb 6, 2013 Skiing in the Porcupine Mtns St. Park on Lake Superior in Michigan's upper peninsula. Temps were mild, teens to low 20s. This jacket is not a "warmth layer". It stops the wind and keeps warmth in. After a ski of a couple of hours, we stopped to look at a cool structure and I quickly became chilled. I pulled out the 'Houdini", put it on and was warm in a few minutes.
And as a bonus, I finally figured out how to stuff it in its own pocket! Great coat that I will use in all weather.