Ortlieb Back-roller Urban 20L

"The Back-roller Urban 20L from Ortlieb is the ideal choice for anyone looking for a reliable and stylish solution for everyday transportation on their bike. This urban rear pannier features a classic design and a practical roll-top closure that keeps your belongings safe and waterproof. Made from a robust, PUcoated Cordurablended fabric, the bag not only offers durability, but also a pleasant feel"
"With a volume of 20 liters, it is perfect for everyday use, cycling, leisure or work. Thanks to the large reflectors, you are clearly visible even in poor lighting conditions. The bag comes with a practical inner pocket and a detachable carrying strap, which makes it easier to transport off the bike. It can also be perfectly combined with the Rack-Pack models in 24 L and 31 L on the rear racku003e4."
"The Quick-Lock2.1 system enables simple and secure attachment to luggage carrier tubes up to 16 mm. The Quick-Lock3.1 system provides even more flexibility, allowing the main mounting elements to be permanently attached to the luggage carrier and keeping the back of the bag free of interfering hooks. Additional security is provided by separately available accessories such as the Anti-Theft Device and QL3.1 clamps for different tube diameters."