These are great under our office chairs with wheels. We have several of these. They usually are sturdy & last for several years. But we replace them from time to time when they start looking dull. (Maybe you can scrub them to make them look brighter again but we just replace them.) So far…they have been reasonably priced at Staples.
I have now had my chair mat only a couple of days so I can't speak to its durability but so far I could not be more pleased. I can't imagine anything better.