1. pleasantly thin,
2. almost not wobbly on,
3. is tight on the unit and
4. also looks good. The white variety is the favorite for me (on a white unit).
Two negative points, it has nevertheless:
1. the lower outer edge is exposed and can be damaged in an unfavorable case despite envelope.
2. The volume rocker and the power button are somewhat deep into the casing, so that the pressure point must be made very accurately. After a few days I use but I am used to it.