The Cyclone IV Chubby is specially made for the Brompton. Not only does it fit behind the Brompton, the Brompton also fits inside the trailer!
With the Chubby you can catch a plane with your Brompton stored inside the padded Chubby bag. On arrival, just take out the bike, put your luggage in and connect the Chubby for a comfortable travelling rig with up to a 100 litres of storage. Or pick up your friend at the station with your spare Brompton in the Chubby and they ride back home with you.
The Chubby folds away small for storage, on the road it will carry 100 litres and 40 kg. The bag opens all around for maximum accessibility, using a 10mm YKK zipper with two lockable sliders. There are two wheel positions for towing or for wheeling. The wheels of the Chubby are conveniently the same size as the wheels on the Brompton and they can be stwed in the panel on the top of the trailer when you need to pack it down for transport.. Also available is the rucsac carrying system.
See the video.