This mat gets divots where my chair legs meet the mat. This prevents me from rolling forward or back. I believe the plastic is too thin. The mat is on top of Berber carpet and jute padding.
It is fine for my needs. I can tell that it probably won't last all that long but I am using it for my home office while working remotely because of the pandemic and didn't want the new carpet in my office damaged. The size was perfect for the space I needed to cover. It does tend to bow under the weight of the chair and all the COVID weight that I've gained.
This is the second Chair Mat I have purchased after many many years of home use. with the first chair mat. The larger mat size I have liked as it provides greater coverage of my work space and stays in place. Downside: small divots occur where chair wheels rest.
Chair Mat was delivered on time at a very good cost. Since it was not rolled up like others I've seen online it was easy to remove and replace my old mat.