This is the first paddle jacket I've owned, and I'm really enjoying it. I do a lot of cold weather paddling, and this jacket keeps you toasty ( with other layers of course ). I'm 5'9 160lbs and the medium fits nicely over a base layers and a fleece. Also the zipper pocket on the arm works great for my mp3 player, haven't submerged with it yet, but it stays dry!
A friend of mine who has this same jacket decided to surf a pretty good wave on lake wenanchee and went for a swim. His top stayed dry! There was minimal dampness on the very bottom of his fleece layer underneath, but the rest was dry! Great jacket! Totally BOMBER!