At first I was skeptical about whether the Roswheel top tube bag (here I rate the product, not the dealer!) Is suitable for my Fahhrad because I open and overhead shift cables. Meanwhile, I have the pocket almost half a year in use and could not on the bag still my derailleur cables increased scuffs notice (well, maybe I'm just lazy switching). We, too, the free movement of the shift with me not hindered by you pocket. The storage space of the bag is divided into two. In obeeren part is the place for smartphone (HTC Sensation and Sony Xperia Z3 compact easily find space). The operation by the cling film works very well, the splash protection is for my needs always sufficient. The smartphones used by me, it is possible only in case not readily closed to press the On / Off button. Bearable. The "headphone port" I have not been tested. Otherwise, in the case found loose ne Power Bank, key, tempo, and yet ne small shopping bag space. As the product exceeded my expectations not only met but even überroffen, there 5 Star. Conclusion: I would buy me the bag back.