Ortlieb makes some of the finest panniers, they have long been staples on our own commuter rigs here at Tree Fort. What's the one thing that makes any daily cycling product better? High visibility. The new Ortlieb Back Roller panniers add additional reflective elements to both the neon yellow and black fabric. The minute headlights hit these bags they basically glow in the night. These fully waterproof bags have a total volume of 20 liters, and weigh only 59 oz. The familiar Ortlieb QL2.1 attachment system makes installation and removal a breeze.