Without even mentioning the mountain, it definitely stands up to japan's bad weather, constant rain, and downright nasty wind. when you zip up all the way the micro fleece's soft and warm on your face; i hate to say it, but dogfunk's wrong on a couple things, this IS zip in compatable with other burton pants, and as for pockets, 2 hand, 3 cargo, 2 chest, 1 pass, and 3 internal including a media pocket that you can access from the inside or out.
i'm short so the extra length doesn't do much for me in the arms, unless i close up the wrists a bit i feel like a little kid, but the length everywhere else just helps it look badass, i get complements everywhere with this jacket,
my only complaint (and i mean only), no insulation, but the site says that, i didn't expect insulation, and i just fix that with a good base layer.
now on the mountain... wow;
it survived my painful learning phase without a scratch, and continues to beat down the elements.
I recommend Nikwax Tech Wash and TX Direct to keep it goin' strong as long as it's in one piece