Ortlieb Back-roller High-vis

"The Back-roller High-vis from Ortlieb is the perfect choice for all cyclists who value safety and functionality. This waterproof rear pannier impresses with its PU-coated fabric with integrated reflective yarn, which ensures increased visibility in road traffic. With a generous volume of 20 liters, it offers enough space for all the essentials on your bike tour. The practical roll-top closure ensures that your belongings are always dry and safely stowed away. Thanks to the IP 64 protection class, the bag is optimally protected against splash water and dust."
"A highlight of the Back-roller High-vis is the flexible Quick-Lock2.1 system, which enables simple and secure attachment to luggage carrier pipes up to 16 mm in diameter. For larger tube diameters, the QL3.1 system is available separately, which allows direct screw fastening to the luggage carrier and keeps the back of the bag free of hooks. The bag can also be combined with the Rack-Pack 24 L and 31 L to create additional storage space."
"To ensure the longevity and safety of the bag, a few precautions should be observed. Check the fastening of the bag regularly, tighten the carrying straps before each ride and check the screws after the first 100 km and later at regular intervals. Also observe the maximum load of 9 kg to avoid material breakage"