I think I've seen runners wearing shirts with a rear pocket. I really, really don't want to get into jerseys -- it's a whole 'nother thing to figure out and spend money on.

I just want a place for ID and cash to be safe. Does anyone know if there are such shirts, or did I imagine them? I plan to swing by the runner's apparel store and a sporting goods store, but anything to shorten my search would be welcome.