This mat was a little more expensive than my previous one but it's much more firm and larger so I don't find my chair getting stuck halfway off/on the mat. It is very sturdy and makes it feel like I am on a hard floor. I'd recommend spending a few extra bucks for this mat. I can tell it will hold up for years.
Too late to return it now. The mat is too thin. Maybe my carpet was too thick. The chair would sink in the mat. When I would try to move my chair I had to push it out of the indentions that were made in the mat.