His face is below the skid and helps adhere well to the surface on which the carpet is laid, even if the surface is as smooth as that of an office!
The other side is perfect to easily move the mouse and without the beam is disturbed, approval is really instant, before I had an optical mouse without carpet and sometimes the cursor behavior was a little fufu! Now, thanks to this carpet very small price, I am calm, mouse goes wherever I ask him.
Fast delivery and careful, unbeatable price, buy to recommend, especially that it is very discreet and can therefore be used in a professional environment without worry!