Frost+Sekers Quick Lock Mount
Designed to work with any saddle. The Frost+Sekers Quick Lock Mounts are easy to use, you can attach and remove your luggage with one hand.
The Quick Lock Mount for Brompton is designed to ensure it work with Brompton seatposts. The straps of the bag attach to the Quick Lock handle and under the Brompton saddle. To detach the saddle a short sharp pull will release it.