The ortlieb courier bag urban 18l is a courier style shoulder bag ndash ideal for people who regularly use their bikes to get where they have to go the innovative strap concept allows you to conveniently turn the bag into a slipsafe backpack the padded back of the bag provides extra carrying comfort the large flap cover with its velcro closure and additional snap buckles is especially practical ortlieb courier bag uban 18l features organizer with notebook sub compartment