My requirements were all met.
The protective cover ensures a basic protection, no scratching the back and provide some protection from falls. The mobile phone is good grip and is much thicker through the shell and the color is a nice strong blue.
After about a year of continuous use my sleeve has some scratches and the paint is something "abgegrabbelt" above all at the edges by the frequent contact with the skin and the Denim at rausholen of mobile phones, but still serves its purpose.
Those looking for a solid case for a reasonable price, you should consider purchasing.