So far this mat is doing great. It doesn't slip and my chair rolls smoothly. I do wish the piece that goes under the desk was a little larger since I do roll off the mat on the front end however that is only a very minor gripe. The last mat I had cracked very early on (it was purchased in-store folded down the middle). First it cracked several times down the middle seam then over the next year developed micro-cracks all over. So far this new mat is holding up well without a single crack (about 2 months in)!
I'm honestly appalled at the high cost of chair mats in general. That said this mat is honestly too thin for my use but I knew that to begin with and refused to spend more for a chair mat. It's a fine chair mat for what it is but used on a medium pile carpet like I have it's going to get noticeable dimples that make it a little hard to roll the chair. But since it's not meant for medium pile carpet I can't really hold that against the product. I can hold the general price of chair mats against the industry though. *shakes fist*
Thickness is my concern since computer chair dents it so easily even though chair rolls okay on it. Recommendation would be for those seeking a budget mat.