I've only had the opportunity to wear this a few times, but in light rain it shed the water with no problem and the breathability is better than any hard shell I've had. At 6' and 160lbs a medium fit me well, and the stretchiness of the fabric enables unrestricted movement, even when layered with a light fleece underneath.
This review was written in the old system and had content requirements that are different than reviews written today.