This case is now my third X-TPU Cases by Mumbi, with the previous two I was very pleased. This case encloses the mobile phone at the corners very well, but has an absolutely serious disadvantage, which makes them unusable - see also the review of "Ina Rooms": You just bulges for two different volume keys provided (high / low), ie model 08/15 transferred to the Ascend Mate, instead of creating a continuous bulge for the existing loudspeaker rocker. As a result, the shell is not only at this point not only - they even enabled continuous pressure on the keys. You can imagine how shocked I was when the phone in the envelope twice rebooted and offered me to reset to factory settings. Once unhappy come to the wrong of the three on-screen buttons, and you can start with the phone again. Luckily, I quickly realized that it was the case. Here you have "Mumby" definitely rectify, the relatively high price for a bit of punched plastic commodity should fit these at least to the device without harming the user.