The quality is absolutely fine - the seams are worked beautifully and the feel is comfortable.
From this side there is nothing wrong.
A star deduction there however for the nonexistent fit for the BlackBerry 9790. This case is much too large and in all dimensions! The BB9790 disappear simply completely in this envelope, and yet I'm not talking about a few millimeters are of course necessary, but a deviation from the permit only one conclusion: This bag is not designed for the BB9790, but clearly for iPhones. I tried it with an iPhone4 and for this case fits perfectly - even the punched holes in the cover for the microphone match.
CONCLUSION:
Good product - poor product description