Great chair mat but when Staples ships it they roll it up and tape it with a really cheap tape that is IMPOSSIBLE to remove. You'll start with your fingernails then a ruler or scrapper of some sort your try a solvent and so on and on... eventually you'll just get frustrated and leave the tape there and it looks terrible for the life of the chair mat. Pro-Tip: Put your favorite poster under your chair mat for a little extra decoration and to let people know that you really do have a life outside work.
Chair mat is good but slides on the carpet about 6 inches every week or two Needs to be reset to proper position despite the grippers on the bottom of the mat.
The only thing that I don't like about the chair mat is that if I sit in my chair for any length of time the rollers sink into the mat. It takes some effort to roll the chair out of the indentations. The indentations do go away though.