It works as advertised. But it is quite thin so there are temporary indentations where the chair leg or my footstep was. I don't think it hurts anything in the short term but it looks weird.
This mat won't unroll and was rolled up with the carpet spikes on the outside. So I ripped my hand open trying to just unroll it and now a week later it still won't lay flat. Put a heat gun to it today to try to get it to lay flat with little luck. More than likely I will have replace it and just throw this one away.