The material (steel) is clearly high. The flap is easy to open and flip closed are in the view of the clock in the upper section of the display freely. By rolling on the inner sides of the envelope, the S4 is easy to push and slide it back out of the case if necessary. It scratched nothing. Also applies to the door that they are well protects the display by the glued plastic felt and unscratched. The casing is well made, so that nothing rattles o. Ä.
Nevertheless, unfortunately: The appearance of the phone is quite affected by the shell as a whole. The otherwise lean S4 acts in this envelope unfortunately very bulky. The smartphone weighs in this envelope too much and as a whole too bulky to really comfortably fit in a pocket. Ultimately therefore affects the Gesamtkunstwerk Galaxy S4 with shell like a futuristic metal box were accordingly in my environment the comments. What I have learned from it: I take the envelope like for a walking holiday or a longer trip with to protect the cell phone on a trekking or cycling etc. Since I can stow it easily in your backpack, where it is in good hands and safe in the robust casing. For everyday I opted for a lighter, almost invisible Silicone Case for the back (s. Comprehensive Income).
My overall result: protection is not everything. For me, this shell was the first look at the picture once a good idea. In everyday use, however, showed up at me quickly: not suitable for me, because in the S4 in this shell is too bulky for the pocket and doubled the weight of the phone felt. For everyday at home I am so changed to a simple transparent silicone sleeve for the rear area. It also protects well, the appearance of the S4 hardly affected and weighs next to nothing. Overall I give for this shell of stainless steel, because it is at least high-quality and is well made, three points.