I read the reviews for this and sized up, and am super happy. The zippers are are a little tight, but not any different than you would expect on any rain or water sealed layer.I got the medium - I would normally wear a small. 5'5'' and 120 lbs. My chest is about 34"... just to help you all size properly.It also stashes into a pocket and ends up being about 3" by 4."All in all, a great thing to have and bring on longer or cooler rides.4/5 stars because George should know NOT to be weird on sizes... no girl likes buying a size larger than she thinks she is!