This mat is not as thick as the one I replaced which I also purchased at Staples. This mat would probably work on a wooden floor but it's not very good on carpet.
It was exactly the right size. I have always purchased the chair mats with the cut-out section for the chair opening of the desk This time I bought the solid 36 x 48 rectangular mat and it works so much better. No slipping and moving...and my chair rolls easily over the mat. I have thick carpet under my desk and this mat stays put. Also I ordered late one evening and it was delivered on the second day after ordering. Very speedy delivery. Thanks!