I'm looking for a small front rack bag. A friend has a Nitto bag that has a nice attachment system with little loops and snaps to hold it to the rack and a zipper around the top, but it's kinda heavy for the size(thick canvas/leather) and expensive for a tiny rack-top bag. I've found a few others, but they're also the "vintage" look and expensive. Does anyone know of any cheaper options? Waterproof would be a huge plus.