I was expecting a rigid mat that would keep my chair from sinking into the carpet but this one is very flimsy and flexible. In fact it's so thin that you can roll it up. My chair wheels make dents in it. It looks nice and is better than nothing but it definitely doesn't help my chair roll better or keep the carpet from being smashed. If there wasn't a pandemic I would return it to the store for something else.
I specifically looked for a mat for medium carpet. This mat is too thin so depending on where the wheels are on the chair it dents the mat into the rug. It's a struggle to get out of the "rut" I created. Also mat moves around and I'm constantly needing to move it back. I'm not sure if I can return this since I already got rid of the sticker on it. :-\ I'll see if I can find something that I can put underneath to get a stronger base.
The size is great and for the first 5 minutes it was fine. However after sitting in it for a bit the weight of my body and chair left imprints in it causing the wheels to get stuck. I weigh 115 lbs. It’s a weak flimsy material. Would not buy again.