I bought this desk pad to use on a low pile carpet. It was delivered flat (not rolled) which was a good indicator that it was going to be sturdy since it is too stiff to be rolled. I weigh about 200 lbs yet my chair rolls smoothly and does not get stuck in dents. The mat has small raised tabs on the bottom that prevents the mat from moving around. It's perfect for my needs.
Does what it says it will and does it surprisingly well. I have it pinned down under the legs of my desk and I haven't had to adjust it once in the month I've owned it even though I'll often slide off the edge and back.
I just ordered my 3rd of these mats in 12 years. I work from home and my desk chair is on the mat moving around 5 days a week 46 weeks per year. Replacement every 6 years is great. Plus the ease of moving around on the mat is wonderful. I highly recommend!