The sheath is fit and holds on the device. The side buttons are protected and can no longer operate "accidentally" what had happened to me more often, especially in the Lock / Unlock button, because this is exactly where my thumb is on the device. The mobile phone is a total non-slip through the shell and is better for me in the hand.
Of course, the sleeve bears on something, but at the display size makes no much difference.
I could not detect any odor, stains or discoloration on the phone and not (had been reported in some reviews on other cases on Amazon)
Conclusion: A superbly finished shell at a fair price. I'm very satisfied.