This mid layer jacket is everything Dynafit claims it to be. At any pace beyond a stroll, you become an inferno. Beads light wet snow so well you have to shake off before going inside. Super light weight and the athletic/trim fit is great for moving about. Not too snug and can fit over any base layer. As for the fit, I'm 5'7" and 160 pounds. Purchased a medium and this is well-proportioned. Sleeves, which I sometimes find too long for clothes that fit my torso, are back of hand perfect. Pockets are roomy and hand pockets are warm and softly lined. Couldn't be happier and really looking forward to ski touring with this. Highly recommended, and also recommend Cripple Creek Backcountry for fast shipping. Thanks, Carbondale.