Day bag for supported tour on bike with no racks?
Sorry, dunno if this is better for the randonneuring/commuting forums. Feel free to move if it would be better answered elsewhere.
I am signed up for a supported tour at the end of the month, the kind where you pack up your gear in a duffel bag each morning and someone else drives it from camping site to camping site while you ride. Since I have no need to carry much gear, I was planning on taking one of my skinny tire road bikes, which don't have provisions for racks.
I'm looking for something that I can toss in my rain jacket, maybe a set of arm/leg warmers, a hat, small cable lock, etc. Nothing much, but more than I can fit in my handlebar bag. Is this something that a bikepacking seat bag would be suited for? Would a frame bag be more suitable for a road bike? Is there another option that I am not considering?