A good compact size (expandable) which I find very useful for keys, passport, usb cables etc because my new mesh jacket only has two pockets. Just toured Spain and France and now wouldn’t be without it. A great addition to my touring set up. Can be mounted in a more forward position than in my pic but I have my phone on a quad lock on my bars so this works for me. Easily detached for refueling or if leaving the bike for a while.