Very flimsy. Left chair depressions in the carpet. Moved whenever my chair moved left or right; back or forth. Curls up at the sides. Worst chair mat I've ever used. Will probably throw out and replace with more sturdy one similar to what I've used in the past. You get what you pay for.
Hoe this will be the best chair at. Previous ones normally did not last very long before they cracked / broke to pieces. This seemed to be a good value for the money and it was not folded up. It has a one year guarantee so I'll be curious to see if it indeed lasts that long. If it does it will most definitely be a first.