This works well to protect the carpet. I have an area rug and it is to thick and has padding. This would be great on a commercial grade carpet with low pile and no padding.
It dies not stay in pkace and the weight of the chair alone leaves dimples. It is hard to roll the chsir when seated because the chair rollers sink into the mat.
I buy this because it’s notched shape fits under my corner desk. However it is ribbed & flimsy even from the start & will crack & must be replaced often. Only guaranteed for a year.