Product was delivered without being rolled-up or in a box. It had a permanent crease in it. It was not possible to be used for its intended purpose. We cut it down and used pieces under a file cabinet...very disappointed!
We have two computer desks in our house both on top of carpet flooring. It was difficult to roll the computer chairs on the carpeting and actually broke one chair's castors doing so. It was also starting to mat down the carpeting. We knew we had to do something. We checked at Staples found two mats we liked bought both intending see which one fit the best and return the other one. But we ended up liking both very much and they fit the space we needed them for so we are keeping them both!
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.