Goat sleeve ftw
I'm going to start off by saying that I have yet to put this thing to the test because we have been having a really warm winter down here in the mountains of north GA. However, my first impressions of it are that it seems to be a pretty solid piece of gear. The material is really soft and super stretchy, which makes it really easy to slide it over your head. My only complaint is that the material seems to be a little on the thin side, so I'm not sure how it will hold up to a really cold breeze.
*Update- After using the Goat sleeve while hiking in 30 degree weather with a 20+ mph wind, I have to say that this thing is worth every penny! Even though the material seems thin, I have to say that I am thoroughly impressed with how it performed. As far as sizing goes, I have read that some other reviewers think that this thing is "sized for a baby", I have to say that I have not had any problems with sizing, and I have a fairly large head.