I find this mat to be functional and durable. It stays in position as needed due to the corrugated points on its back. The four-legged chair on it slides smoothly on the top surface. It stays in place on the carpet it protects quite nicely. Recommended as a very good value for the price paid.
I am sorry to inform you but this product cracked the first day day I Used it. I will be returning it back to the store. But presently we are all in lockdown due to Coronavirus.
This is a great carpet chair mat; however it required spending a LOT of time soaking and scraping the label on it in order to remove it from the top surface...it would not peel off but needed to be soaked several times with much scraping inbetween each soaking.
The mat itself is nice and the 'teeth' underneath keep it in place on the carpet. This is probably a function of the wheels themselves sinking into the mat + carpet; there are some indentations in the mat from where the chair is stationary/when I'm sitting in it. Not sure if that can really be avoided though.