The Back-Roller High Visibility is one big reflector! Notable features include:

• Polyurethane-coated Cordura fabric woven with a high-luminosity reflective yarn for added safety during dawn and dusk

• 20 liter volume

• Durable, waterproof, dustproof exterior

• Easy, convenient roll closure system

• Detachable shoulder strap

• QL2.1 mounting system for all bike racks with tube diameters up to 16mm (+ inserts to reduce the size of rack hooks to 12, 10 or 8mm)

• 3M Scotchlite reflectors

• Inside pocket for small items

In a sentence...great for riding in traffic and/or riding in the twighlight hours.