DSC01450 Medium Leatherman cruiser 2 sissybar bag holds my medium leather jacket with the insulated liner in it,and vest but no room left after that but gives you an idea how big it is. Took off most of the mounting system, but the center quick release strap works great with the hole in the Corbin backrest and the other two quick release straps secure it from moving around and i like the easy removal.