I've loved this bag ever since I saw it actually posted as a picture on these forums. I couldn't decide between the small size bag PM and the medium. I'm tall 5'9 and a medium build but I prefer smaller bags since I don't have a lot of stuff to carry and this bag hangs on the hip area I felt the medium was a little too protruding for my liking. I'm not sure yet. Still deciding btw the PM and medium but fairly certain I will keep the small I got because it seems perfect. The pic with the trevi is a size comparison of the small trevi and the bergamo PM. Also those viewing the photos can keep in mind my sweater is really chunky and the jacket also chunky....was all too see of this is a great winter bag and it is since it can fit over layers and layers and the strap is a little adjustable. If someone would like me to take a pic of that just ask.