I returned this chair mat shortly after bringing it home. It is so thin that the wheels from my desk chair made fairly deep indentations in it almost immediately. That made it difficult to roll the chair around. I expect that it would crack in a short period of time as well from normal use.
Had hoped for a firmer mat. I have a med/hi pile carpet. If i sit for more than a few minutes the roller wheels of my chair sink and I must push to roll up out of the indentations. The indentations do disappear quickly. It is the climb out of the hole that I am dissatisfied with.