Very flimsy mat. It would work great on surfaces without any carpet at all. Our low-pile carpeting makes the chairs sink in and put grooves in the mat. It's just a matter of time before the chair rollers break through.
Face it. You get what you pay for. When delivered I was actually kind of impressed with the construction. It looks thick enough and it does a good job at not moving around. However after a week of using it though I can see the indentations and creases forming. If I get 6 months out of it I'll be lucky. For now it is protecting new low-pile carpeting but I will make a more sizeable investment in a higher quality product the next time.
it works but it already has an indentation after 2 weeks of using it. All chairmats are over priced but at least with this one you can protect the carpet and not spend too much