Even without being in the great outdoors, the Back-Roller City give bikers greater flexibility. The bag can be used on both sides or as single pannier. Highly incandescent 3M Scotchlite material reflectors on the panniers’ sides give increased safety in traffic. The affordable basics can be upgraded with numerous accessories. This model is provided with edge protectors having slots for fixing the ORTLIEB pannier carrying system.Specification:Fabric: PD620/PS490,Height: 42cm,Width: 23cm,Depth: 17cm,Volume: 40L,Weight: 1520g.