Actually well this shell .....

... The casing is well made and fits really well on the S3. The material feels good and stable. The inside, so that after resting the S3 feels gently, so that the battery tray from the S3 should not be scratched particularly (had an envelope with reinforced material; this was so hard that dust between the shell and shell on the back with the time cause significant scratches .... should not be the case here, the regular cleaning).
However, my black S3 sees in this envelope a little gray-brown from what .... contaminate the noble black design of the S3, at least I do not like this look. An example image with all S3 colors would have been helpful here.
Apart from the optics meets the shell as protection its purpose fully. Have they returned and will now be searching from the same provider a completely black casing / order.