This mat may work well when placed on a hard floor. I am using it on a low pile carpet and the casters on my desk chair sink into this very soft mat to the point where my chair is difficult to move.
Great for a quick home office set up for remote work. At this price point it's not thick enough to handle hours of chair activity without movement so chair wheel indentions are expected.
It is a very stiff shiny but not rigid plastic. It was not wrinkled and immediately lay flat. Does not give off any odour. Does everything you would hope a chair mat would. I strongly recommend it.
It was very hard to unravel they way it was shipped and the edges do not lay fat on the carpet even after being down several days. It is very thick though so Iit has not craked like cheaper floormats.