The instructions say not to use it on thick carpet with a pad. However I couldn't find anything that would work better so this is what I bought. So far it is working fine. It does get indents but they come out after I leave my chair.
Not nearly as thick rugged and durable as the one I purchased from another vendor for the same price. I'm sure I'll have to replace this at some point in the future as a result.
i have a thick plush round rug in my home office and was always getting stuck when i rolled back and was usually flipping or bunching the rug up every time i moved. buying this mat was a great solution to my problem.