Having tormented me for 6 months with an Ortlieb Ultimate Plus bag (the cover lock and the Ortlieb-click Adapter are catastrophic because of a jammed permanently and the other screws break during the journey!), I was finally smart enough to dismantle this and to look for a new bag. After some research I decided for this Rixen & Kaul bag and am just thrilled to now after about 500km mileage. The original Klick-Fix adapter is simply the best when it comes to installation and pocket mounting comfort. It took me less than 2 minutes for installation of the adapter and the bag can click it to super easy. Since wobbles and rattles nothing on the adapter. In my Ortlieb the castle has partially so rattled during the trip that the opening mechanism was triggered and the bag fell off the bike ... Also, the bag was very bad up and unchecking. At Klick-Fix adapter original for this to work as I have said excellent! The bag itself is still slightly larger than the Ortlieb, but fits well on my bike and I get so with everything I so need to drive to work. The zippers are worth gold for easy opening and the bag folds down forwards, so that can be grasped in the pocket from the seat. The division I find also very well done. In the small front pocket loose passern multiple devices such as mobile phone, MP3 player and navigation system into it at the same time. The card sheet is completely abklippbar. The shoulder strap can be adjusted to the extent that it can be used as Handtragegurt. I lack because in contrast to other reviewers nothing. The bag itself is not waterproof, which I no longer feel as negative, as a well-fitting rain cover is included. These can easily be attached, so that can still be easily reaches the bag contents. Overall, therefore, in my opinion, an excellent case, albeit not cheap ...