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
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.
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.