The Brompton front luggage block fits on every Brompton and every Brompton front bag fits on the block regardless of the age of the bike or the bag. Most other bag makers make bags based on the front luggage racks from Brompton. In that case a proper fit on the luggage block is garanteed.

A bag clips on automatically to prevent loss during the ride. A handle on the bottom of the block is there to unclip the bag. A piece of rope or leather lace can be attached to the eye on the end of the handle to make a remote controll. The handle can otherwise be hard to find underneath the bag.