Puffy it ain't
"Puffy" is kind of a misnomer since this jacket is actually very slim, very form-fitting and curve-accentuating. It seems quite warm for such a low-profile jacket, although I haven't tested it on the mountain yet. The only complaint I might have is that the hood is not very adjustable, unlike the hood on my other Burton jacket.
OK, post-ride update -- was out on a not-too-cold day with lots of wet snow coming down -- worked like a dream.