Works as advertised on my (higher) low pile carpet. Very much an improvement. Material is thin so if you sit in one spot divots form in the mat. Not really a problem thus far you just get a bit stuck in a small depression (or 5 of them in my case). This would not be an issue for a more commercial (lower pile) carpet situation. Overall works as intended does not move around on the floor.
You should ask for this review after 6 months-1 year. The mat is fine but it's brand new so of course it would be fine. They typically start cracking and breaking as they come up on a year old. If this thing stays in one piece then that would be a 5-star rating but I can't know if that will be the case right now and so cannot give a 5-star rating on quality yet especially one that I may be sorry for a few months down the line. I'll give a 1-star rating for now as quality remains to be seen. Forcing the star-rating after one week is going to bring your numbers down.