product is a little thin and a heavy chair wheel leaves an indentation. also it was supposed to work well on heavy pile carpet but it works better on light pile carpet.
We got a chair mat for our computer desk over 10 years ago. It took over 8 years for it to form a spot that the wheels rolled into. The one I just got was the best one they had. It took less then 2 weeks for it to form a spot for the wheels to roll into. If I knew that I would of just used the old one.
Quite unsatisfactory item. In contrast to the one I purchased previously from Staples this one slips on the carpet requiring frequent adjustment. I shall be returning it.