The plastic is very thin and does not give good support. The wheels on my chair sinks creating a low spot. This makes moving the chair very difficult. I weight about 200 lbs and that might cause some on my issues
Arrived when scheduled by free delivery. Definitely go for this sturdier mat if your carpet has any sort of pile. It will still dimple with concentrated pressure over a small area for example the leg of a non-rolling chair but works well for rolling office chairs.
I weigh 155 and have a standard size chair. The mat is quite thin and the wheels of my chair leave pretty deep impressions and doesn’t easily move when I need it to. I would not buy again.