I used this jacket in the icy cold peaks of Mt. Washington just last week, and I am impressed by its performance. I would recommend this to anyone who wants an ultra-light, windproof, super-quick drying, and superbly designed coat.
I appreciate that there are three layers around the heart region, and which also serves as a breast pocket or Napoleon pocket as some might call. And after my research on the net regarding the effects of cold, the best part is keep the areas around the chest warm, and you can just slide in a hand warmer and prevent adverse effects of cold.
The only problem is that since its a trim-fit jacket, its sometimes not very easy to get a down jacket under it.