I don't need a rubber fisherman jacket, just something light that will keep the rain off if I get stuck walking in a little rain or have to change a tire or whatever and maybe cut some of the wind. All I usually find around me is REI level stuff (I think that is overkill for me) or walmart stuff that fits like a trash bag. Anybody found something that would fit a slimmer fellow without being a balloon? I am 5'11" and about 155.