I thought that the mat would be more substantial than it is. The wheels under my desk chair cause indentations in the mat and cause some problems with the movement of my chair. I should have bought a mat of greater substance.
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!