the chair mat was a replacement for a previously purchased staples mat. I thought it was identical to the old one but it seems to be slightly thinner than the old one. I am concerned that it might wear out sooner. we'll see how it performs.
The mat slips on the carpet and when I get up from my chair I have to push it back into place. It doesn't crack like others that have the plastic 'spikes' on the bottom so in that regard it's an improvement over that kind.