Remarkable design quality: the anti-slip standing surface is so efficient that it gives the initial impression to stick to the point that the office is initially impossible to move it, as if it were adhesive. Dust buildup eventually make it less "sticky". After several months, it does not stick any more, but the weight of the wrist and the carpet are sufficient to prevent any undesirable movement. Perhaps a serious cleaning it would make these initial properties. The mouse sliding surface is very good and perfectly efficient with an optical mouse (Apple). This surface is thick and does not deform at all with time. The wrist support is very comfortable.
The product's ability to relieve tendinitis seems likely, those of my wife disappeared. I do not have a tendinitis problem, but the product comfort convinced me to buy a 2nd for me. And at least we no longer seeks his mouse on the desktop.