Perfect size for my small carpeted home office. Needed to let it air out for a couple days on the porch due to the strong plastic smell. Works well now that it's in place.
This one has little gripper teeth on the bottom and it lies flat no problems. The former one had no teeth and it bunched up all the time. This one’s a keeper.
It's not a bad chair mat but it is a little thin and as such quickly develops impressions where the chair wheels set. Afterwards the chair doesn't roll as freely. However I'm sure a heavier one would likely cost more.