All High Visibility bags not only come with reflectors, but are themselves one big reflector. The waterproof bags are made with a polyurethanecoated Cordura fabric that is woven through with a high-luminosity reflective yarn in neon yellow and black. That gives ORTLIEB High Visibility bags an added safety feature in twilight conditions and in the dark of night. The Back-Roller High Visibility is the ideal bike bag for those who prefer the convenience of the roll closure system. The durable, waterproof, dustproof, abrasion-resistant and high quality fabric ensures optimal protection for your gear. Equipped with the sophisticated QL2.1 system with self-closing hooks, the Back-Roller attaches to your bike in a flash. And simply use the easily detachable shoulder strap to carry your bike bag comfortably once you&';ve arrived at your destination. FURTHER FEATURES: QL2.1 mounting system for all bike racks with tube diameters of up to 16 mm special inserts allow you to reduce the size of the rack hooks to 12, 10 or 8 mm 3M Scotchlite reflectors inside pocket