User Review: Arc'teryx Men's Gamma MX Hoody
Fabric: Polartec Powershield
I was looking around for a while for a hooded soft-shell to use for winter mountaineering. I tend to run warm, particularly going uphill, so all I need is something to get me started when it's really cold and to slip back on to cut the wind at the summit (instead of a hard shell). This has turned out to be a great choice. I used it last winter in the Adirondacks: on a day with low single digits F, and 15-20 mph winds at the summit, I was perfectly comfortable (not that I was dawdling up top, mind you).
Nits: I prefer a looser cut (so I could get, say, a thin down or primaloft vest underneath more easily), and it is more fitted; I also found the hood too voluminous; and I would have really liked pit zips so I didn't necessarily have to stop, shed the coat, and put it in my pack.
But, the construction quality is superb, it has made me a total believer in PowerShield, and it's worked great. Highly recommended.