The timbuk2 classic messenger bag is a reliable and strong bag this bag was originally designed and bought onto the market in 1989 for the hard working bike messengers so not only is it a great bag but its soul purpose is for people who ride bikes with one main compartment waterproof tpu liner and a true fit cam buckle system for easy adjustments these are just a few simple but sort out after features of a bike bag while there is a side pocket easy to get into whilst riding there is als