Was never able to wear in the elements as I received the jacket with defective main zipper.  The jacket is extremely light and packable; however, the zipper was so small and delicate, not to mention made of plastic.  It seemed like a decent product, but the hardware is just not durable enough.  The fit was fine, it's athletic fit, so I ordered a size up as I normally do with this type of fit.  I ordered a different arcteryx jacket fitted with more substantial zips.