JR Manta style or something similar. It doesn't have to be a Manta but I like that small size for work and such because it's easy to carry and holds the few small things I take with me just fine. I have a regular size Nelson Rigg but my Manta bag has seen it's better days and I'd like to replace it. I've been looking on ebay and on newenough but I thought I might check with the TWFix peeps and see if anyone has a bag they want to part with.... tank bag that is