The plastic mat helps to make my rolling desk chair glide more easily on the carpet. However a thin sheet of laminate or even thin plywood would be so much better. The mat is certainly better than having nothing.
The rectangle chair mat is perfectly size sturdy chair rolls easily on this mat. Very satisfied. It did not come rolled up tightly so it immediately was usable. That's greatly appreciated!
It's not perfect but it was a great price and it serves its purpose! The reason it's not perfect is because the weight of my chair while I'm sitting at my desk creates divots in the floor mat so it's not always 100% smooth surface. I would need to get a thick hard plastic or glass floor mat in order to avoid this problem and I'm not prepared to spend that amount of money for a floor mat just so that I can have a perfectly smooth rolling experience when I slide from one end of my desk to the other. This is going to work perfectly fine for me!