The two sides are provided with small protrusions (about 1 per mm) so that it lies securely in your hand.
The material of the shell is not sticky, so it as before easily in / out of your trousers (not therefore prevented accordingly this shell that the phone out of his pocket slips when you stand at the fair in the ship rocking on his head) goes.
The three buttons require enveloped a higher effort to operate.
To my relief, I installed my apps / widgets that I can trigger via touch functions "Mute" and "Switch off screen", then I need the power button only to turn on, thereby preventing the envelope pretty sure the accidental switching.
