Fine backloader where you can put enough in for a multi-day cycling trip, provided you don't go camping. It is easy to assemble and of good quality. I did notice that the bag tended to hang down. However, this is easy on the loose by securing the straps along the top and crosswise instead of along the sides. For a multi-day trip through the Eiffel, it held up well.
Super nice bag! I cycled to Paris with it last week, and everything I needed fit in it. The bag attaches well to the bike and you have as much balance as normal. The bag stays up well and even a pair of sneakers and sandals one could be attached on top.