The black case is seated properly - not too tight, not too loose. Also repeatedly Rausholen and re-packing of the smartphone does not change anything. All the buttons are easy to use if you have short grow familiar. The outer shell is less slippery smooth as the smartphone itself, but it adheres only slightly to materials (bags) or in hand - (the shell is made of silicone, not rubber!).
Unfortunately, the material has an unpleasant for sensitive noses, slightly sweet odor, which, however, especially under heat (sun!) Is clear.
Still, for the price a really rewarding, absolutely meaningful protection for smartphones - in combination with an anti-reflective screen film highly recommended! (Long-term experience to use, I have not yet.)