The ortlieb downtown black n white the downtown is a reliable companion on your tour through the morning or evening rushhour the waterproof bike briefcase provides secure cargo carrying plus reliable protection of files documents and laptops up to 154ldquo a hands free way to carry your everyday digital and off line essentials this waterproof bike briefcase with lid closure can be quickly mounted and taken off the rack singlehanded it features an extra wide padded shoulder strap a