I already did a review on this obviously it was lost in your system. For the price it’s a good value for at home offices I suggest however tomhave one similiar with longer studs on bottom to better support thru standard carpet with regular pile
The product description said this product would be fine with pile carpets. It is not stiff enough - so the chair creates dents in the mat. They are not permanent but with a rolling chair you are constantly stuck in the valleys that it creates.
Better than no chair mat but a bit thin unless your carpet is the short/firm office type pile. Our carpet is a little plush and the mat develops dents if I leave the chair in one place for too long.