So far it's working out like the one we had to replace that one lasted a couple of years but being plastic plastic does have a shelf life and gets brittle and cracks so if I get the same time with this one I will be happy
We have a low shag carpet and this is too weak to hold its form. Dimples are starting to form and the chair is becoming difficult to move. This might be good on very low tight pile glue down carpet that you see in office buildings but don't use it for your home carpet.
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.