Feel okay, quality is so

The Xperia Z1 is, in my opinion, very bad in his hand. It's nice that the back and front are flat, but it is exceedingly slippery and the glass back just screams so by fear of falling, even if the phone should be fairly solid yes.
The shell here is particularly high all right, but not.

+ The cover can be easily set up and remove
+ Most of the ports are within easy reach
+ It is relatively thick and seems to protect the cell phone well, but does not contribute too much on
+ Simple, seemingly unimportant Black
+ Very cheap

o The SD card can not be removed with the cover to take off. However, since this is quick and easy, that's not so bad.

- The casing could be significantly less slippery
- It is a bit soft and limp
- Power button is difficult to press.

Conclusion:
Cheap shell which protects the cell phone probably good. The important ports are easily accessible. Not the high-flyer as quality envelope, but for the price ok.