In summary, I am extremely happy with this jacket and will recommend it very highly to anyone looking for a great jacket to wear on the mountains while pursuing snow activities of all kinds. I had no issues with arm movements and was also able to wear a vest underneath this jacket like I mentioned above. I was in between an M and an L, but I like a snug fit and chose the M. I bought the Irish Green color and it looks absolutely fab! :) Do note that this jacket is of an atheltic fit. Speaking of weight, this jacket is very light and packable (it doesn't come with a stowable bag though). Guess this is to keep the overall weight down. The one nit I have is that the main zipper feels a lil 'light' and doesn't quite have the heft/feel that I expected. I spent most of time outdoors in just a T-shirt and this jacket, and it kept me dry and toasty throughout. I wore a size M and was able to also wear a Patagonia micro light vest underneath w/o any issues. Like I said above, the jacket will keep you very warm even in very cold weather. Best of all, since this is a merino wool based jacket, there are no feathers poking through the outer shell (this is a big issue for me with Down jackets). The overall quality of the jacket is superb and I love all the zippers/pockets on this jacket. The hood is fitted and quite tight around the head. The jacket held up extremely well even in 20-25F weather and moderate snow flurries. I had a chance to put this jacket through its paces recently while snow tubing up in the Sierra Nevada mountains of California.

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