I'm 6'2, 185 lbs, athletic build and an XL keeps me covered, length and width wise. It's insulation keeps you warm and the lining feels good. The left pocket also has a media pouch for your ipod, zune, phone, whatever. There is a hole which you can run your headphones to your ears within the jacket. The hood in particular is cool, if you zip it all the way up the neck covers your face and the hood your head etc... It gives you that whole ski mask aspect in a hoodie which I personally find awesome about the thing.