I suspect that the rather rigid shell otherwise could not be installed on the smartphone. In the worst case, it may as well before coming to a scratch on the iPhone.
The Carboneum metallic sleeve consists of a hard plastic shell, which is covered with plastic in carbon look. She does not smell and is resistant to scratches on the glued points.
The protective cover is easy to install, and then sits very firmly. Since it covers only the scope of the iPhone 6, it is a screen protector does not get in the way. Removing the Carboneum Cover is not quite that simple, but doable.
The buttons and sockets on your smartphone within easy reach, only the volume buttons and ringer switch are framed entirely. Here one must possibly more pointed finger make (for my wife hands fits it quite well).
In the package are located next to the sleeve a microfiber cloth and a screen protector. The iPhone 6 is wrapped around so fast.
I like the Carboneum Metallic Case of QUADOCTA really good because it is not so often seen standard silicone or leather case.