The ortlieb saddle bag high visibility high visibility is so important to us at ortlieb because it is a matter of safety the black waterproof polyurethane coated cordura fabric of this bag are densely interwoven with high luminosity reflective yarn this composition turns the entire bag into an eminently visible reflector when it is picked up in the headlights of passing cars the popular saddle bag l shines like a star under your saddle the bags entire surface is reflective givin