gettin' pretty heated up in here...

yes, i'm looking for something like xgecko posted, mostly because i'm a damn dirty hipster with pants that are too tight and look silly with my pockets all loaded up, but who simultaneously doesn't want to lug around a full size messenger bag or back pack because that'd be too big and would make my back all sweaty. i know i could get an osprey pack and that would keep my back dry, but that's more than i want to spend. anyway, thanks for your help everyone...