Little yellow Brompton
A dark destroyer of biscuits!
When commuting with you smart suit trousers , don't fold them carefully roll them from the cuff up to the waist band and slip them very carefully into a brown paper bag ( better for resisting creating than a poly bag) then very carefully, place them at the top of the panniers. Of course you might want to take as much care to ensure that its not your wives smart suit trousers that you were careful with. Don't ask me how I know the last bit!