The chairmat is adequate for the job. It is not as thick as it could be so my office chair wheels have made permanent grooves where they sit. I don't find it easy to roll on and I thought it was expensive for what I got. I didn't want to pay anymore money so I got the cheapest one they had.
*had very limited dollars to spend *was designed to be used on a thinner carpet but working well even with padding *have not owned long enough yet to rate durability *could be just a little larger especially the portion that fits under the desk