I have 0 ralphs, but i have a L Burton polo that fits loose, but a good fit, its very comfortable and a good length, some kind of no name polo that is a medium and fits smaller and tighter but still very comfortable, another L no name polo that fits really loose and short and isn't so comfy. I have a medium or large 686 hoodie thats too small, a Large Volcom hoodie thats a good size and very comfortable and a Large Micreation zip hoodie that fits nice but is a bit short for my liking.
I'm 6' 175 lbs for size reference. Why do you need this info?