This bag will be shown in the label as a front pocket. This could irritate because it is just as good on the rear rack. The important thing is that the Porters are compatible with the click system of Racktime from the construction form. If that's the case, the bag sits firmly and securely on the support and is attached or detached in seconds. No annoying Gefötel with Velcro necessary, which is otherwise often the case. The storage space of 4.5 liters meets my expectations: What I would take to day trips, from the bottle to the raincoat, fits loosely into it. A small outside pocket is good for Key or the like. The processing makes a solid impression. Included is a small rain hood. A quick test under the faucet, however, shows that the fabric of the bag is obviously waterproof. The only thing that can be criticized, is the high price, which is required for Racktimetaschen. Since a (however good) mounting system, the monopoly characteristics, thoroughly executed reached.