Nice puffy jacket from Arcteryx. Fit is true to size, although I wouldn't mind it being a little longer. Lightweight, but warm, and great under a shell.

I wasn't really sure what to expect when I ordered this, but I thought I'd give it a try. Well what I discovered is that this is an absolute must have piece. It's super lightweight, soft and comfortable, and can function as a stand alone jacket or a midlayer. The main body is a nylon wind-type shell that is lightly insulated, but it has stretch panels on the sides that are breathable. The cuffs are a soft lycra-type material and are very comfortable and work to seal out the wind. The jacket is so cozy, I don't want to take it off. I'll wear it alone most of the time, since winters here are mild, but when I head to colder climates I'll layer this under a hard shell.

This is a super lightweight but cozy jacket. I pair it with the Mountain Hardwear carina jacket while skiing and its awesome. Never get cold even in 20 degree weather. I'm 5'4" 120lbs, petite build and got the XS. Its a good, snug fit over a baselayer and thin fleece shirt.

This is my favorite new jacket for fall. It is amazingly light, has a great athletic fit that moves with you, and is so warm for it's weight. This is a new product from Arc'teryx and I really think they're on to something here. This is a piece no athlete who wants to play outside all year long should be without.

I bought this jacket just to wear around the town although I knew it had many performance type of features. I have plenty of ugly jackets that perform when I go running but I wanted a light-weight but warm jacket that is flattering. Well, I got exactly what I wanted. It fits like gloves (xs for 5'3" & 115lb) and moves with you because of the way it's constructed. It's warm enough by itself over a decent base-layer in Boston winter (avg. ~30F during the day) if you're walking a few steps between car and indoor or if you're being active. It will also be perfect for chilly spring and fall days. It is not going to be enough if you have to stand around in the cold or if it's extremely windy. Easy to pack for travel.