The ortlieb office bag pannier is the ideal pannier for any worker on the commute to the office the ortlieb waterproof bike briefcase with roll closure can be mounted on the right or left side of the bike rack easy and efficient the pannier bag can be quickly mounted and easily taken off the rack single handed if you need a smart looking and comfortable pannier to team as a work back then the ortlieb office bag pannier offers room for two large din a4 files size l office supplies mobile e