I ordered this chair mat to replace my standart mat with lip not thinking that I had to lift up part of my desk to get the mat under one leg. With that accomplished I love this mat. In a home office the mat is big enough so I can stay on it to roll from desk to printer and filing. I'll never go back to a standard lip mat.
This is the second computer chair mat I have ordered. It's the thickest I can buy without resorting to a metal plate. I have berber carpet with a medium pad underneath so it really isn't that thick. This mat provides good support for about 3 years but then it starts to break down. Cracks appear and about 3 months after that it becomes unusable. That's why I wish this mat was a bit thicker. But it certainly works well for those first 3 years.
Stays in place on carpet easy to move roller chair. Doesn't take up excessive space but large enough to move around for access to peripheral items at computer table.