My new favorite piece! It layers very well under my hardshell with its slim cut, is nice and packable, makes a good little pillow for me at night and is super comfy to throw on by itself when its a nice 50-60 degree night out.
I was very warm with it under my hardshell when cross country skiing on a stormy 28 degree night.
I'm 5'11", 32" waist and 170lbs and the medium was a slim but comfortable fit. The sleeves are on the short side but I think that's perfect for layering under another jacket. The low profile cuffs are also nice for the same reason.
I'd say the body is a little on the long side, falling a couple inches below my belt line. The hood fits nicely under a helmet, another hood, or over a beanie.
Cons: my wife keeps stealing it.