The Ortlieb Back-Roller High-Vis QL3.1 rear bag will be your faithful companion on bike trips or when you&';re out and about in the city doing a few errands. With its reflective thread, it is a real eye-catcher at twilight and after dark, lighting up as soon as it is touched by a light source. The PU-coated polyester fabric is completely waterproof, protecting your belongings from the elements. It has the same practical features as the Back-Roller, such as an internal pocket, roll-up closure and carrying strap. It also features the Quick-Lock 3.1 attachment system. Specifications Material: PS50CX, PS50X Fastening system: QL 3.1 Height: 42 cm Width: 32 cm Depth: 17 cm Volume: 20 l Weight: 820 g Maximum load: 9 kg