any comments relative to sizing..some of the manufacture info on sizing is confusing at best..
For specific motorcycle raingear, buy your normal size. IE, if you wear a Large jacket, buy a large rain jacket. They are made bigger to go over your existing gear.
I have a large Teknic rain jacket that fits over my large Olympia AST.
I like the Teknic rain stuff. But you should make sure your rain gear has a lining (mesh is fine - if it's just the rubber/pvc, it'll be tough to get it on over your gear). Also, I like to have rain gear that is stitched together and then seam taped. I found out that welded seams do not hold up to repeated use and flapping in the wind. On a trip back from Michigan once, the arms of my Firstgear rain jacket (welded seams) ripped off. So I ended up with a rain vest. Didn't work to well.