Having purchased the thinner mat previously which only lasted a couple months this mat seams to be more of the “medium” grade quality and should outlast the thinner product by several months. This mat is of great quality and considering the total combined weight of user and chair is approximately 200 lbs it appears to have great lifespan potential.
I have had previous chair mats (same size) that were a heavier thicker plastic. I am finding this one to be lighter than expected and chair impressions form more quickly than preiously.