Ortlieb Back-roller Core

"The Back-Roller Core from Ortlieb is the perfect choice for anyone looking for a reliable and waterproof bike bag. With a generous volume of 20 liters, this bag offers enough space for all important everyday itemsu00e4nde. Whether you're commuting to work, running errands or simply cycling through the city, the Back-Roller Core keeps your things dry and safe. Thanks to its robust polyester fabric, it is not only durable, but also versatile"
"This unisex bag is specially designed for urban use and work and offers the highest level of functionalityu00e4t. The IP 64 protection class guarantees that the contents remain protected even in heavy rain. However, make sure not to exceed the maximum load of 9 kg to avoid material breakage. For additional safety, it is important to check the fastening regularly and retighten the screws after 100 km, 500 km, 1000 km and 1500 km to prevent loosening due to vibrations."
"If required, the Back-Roller Core can be extended with optional accessories to increase carrying comfort and functionality. The Carrying System Bike Pannier allows the bag to be carried comfortably on the back, while various inserts ensure greater stability and organization. Rely on the Back-Roller Core to make your everyday life easier and more organized."