Ortlieb Back Roller Core The Back-Roller Core is the low-cost starter model from ORTLIEB, yet sacrificesnothing in terms of quality, sustainability or waterproofing. After all, it goes without saying that the Back-Roller Core is produced in Germany, can present its precise product carbon footprint and guarantees a long lifespan. The Back-Roller Core starter model is a single bag with a volume of 20 liters intended for the rear luggage rack; it can be fastened on the left or right side of the bike. Waterproof bike pannier ideal as commuter model. Features QL2.1 mounting system for racks up to 16 mm Sides of PS490, front and back of PD620 material 18 mm & 20 mm hook avialable as separate accessory (e. g. for e-bikes) Prepared for Stabilizing Insert Including reduction pieces for tube diameters 8, 10 and 12 mm; with anti Scratch function reducing abrasions on rack Top QL hooks and lower sliding hook adjustable without requiring any tools Lower hook rail made of two-component „hard-soft“ synthetic reduces abrasions on carrier Can be used individually (e.g. for shopping, sports, picknick) Highly reflective Scotchlite reflector Easy to clean inside Height:42 cm (16.5in) Upper width:32 cm (12.6in) Bottom width:23 cm (9in) Depth:17 cm (6.7in) Weight:820g Volume: 20L