The processing of the case is first class and makes the "Made in Germany" all the glory. The seam falls externally hardly noticeable. I opted for the bag Alcantara because I expect it that it lasts so long. According to previous 6 months I was not disappointed, the case protects my Nexus 4 every day and can not yet see any unsightly signs of wear. They, too, is still pretty tight on the unit, thus it slips under any circumstances of itself out of his pocket. However, it takes two hands to pick it out of your pocket (or a hand and teeth;)) The cleaning function of microfiber fabric on the inside works well, not quite as good as when you directly with a cloth, but cleans the device but pleasant. Pleasant is also the Alcantara, the bag feels velvety and supports high-quality feel of the Nexus 4)
So I am confident that the case will long prove me well. I'm not entirely convinced of the thickness of the fabric, it is a little too thin. This bag carries though on very little, but I do not have great confidence that the bag offers sufficient protection if my device should actually fall off times. Hence only 4 stars.
A nice side effect occurs through the rough surface, I put my phone away then in principle, only on the pocket. For smooth surfaces, the Nexus would become self-employed even at low inclination. With the bag therebetween, however, it remains in place.
So I would recommend the fitBAG bags at any time, but would give me the next time probably set a favorable fabric.