Even without being in the great outdoors, the new Front & Back-Roller City give city bikers greater flexibility. They can be used on both sides on the front or rear racks or as single pannier. Highly incandescent 3M Scotchlite material reflectors on the panniers’sides give increased safety in traffic. The major advantage: the urban-transport containers do not require any mounting. The innovative QL1fixation system is easy to handle and the bags attach to the rack with one click.