The carradice bike bureau pannier has been specifically designed to cope with the unique demands of the office based commuter the unique cotton duck fabric and weave of the bag ensures the content of the bag remain dry and protected as you will notice the bag features two closing flaps this keeps the top of the pannier clean and dry ready for the office when off the bike the flap folds back to protect the user from the hooks and road dirt the bag also features reflective detailing which wo