I will be traveling to the World in March/April, and i will have my 6 YO sis with me, and i was wondering what is a comfortable bag that would not be to baggy to carry around. Mainly for Camera, wallet, hand sant, and a few other things we may need. Im looking for comfort, and as far as it being small enough not to have to leave it outside the ride. I carried a camera pack last time, and it fit fine on all rides, but i need suggestions of something a little bigger!!