TheOrtliebBack-Roller City Pannieroffers great flexibility and can be used on both sides or as a single pannier. The 3MScotchlitereflectors 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. OrtliebBack-Roller City Pannier Features Waterproof bike pannier (pair) ideal as starter model QL1 mounting system with straight lower hook rail Sides of PS 490 nylon material, front and back of PD620 material No mounting required (simply adjust the hook distance with allen key no. 3) Ideal for racks with a cross-section up to 16mm Reduction pieces for rack cross-sections 8 and 11mm included Can be used individually (e.g. for shopping, sports, picknick) Highly reflective Scotchlite reflector + Can be easily cleaned inside Optional accessories: ORTLIEB carrying system, outer pocket/s (size S), mesh pocket, bottle cage, inner pocket, shoulder strap (article code E 172) Easy to clean inside