I tied a loop of nylon cord thru the hole in the catch release lever, with a rubber button on it. ..
My steel Brompton bag support got a 9" bottom forward extension. 3 tubes and a cross piece in front , to haul Cartons ..
I have a Messenger bag , it has a waist belt too , the waist belt wraps around the side tubes and snaps together.
so when I have something else to carry , I put the Messenger Bag on .
Since this old thread was revived... last Xmas I bought myself a Ortlieb-Brompton O bag .. Always Its Dry inside.
went with the Bigger rear pockets , they snap on .. replacing the smaller ones Included.
Also optional.. A Bottle Cage, and a Mesh bag to put your helmet or similar sized thing In It. then it folds up small when empty.
Last edited by fietsbob; 10-18-14 at 02:29 PM.