I had a carpeted area in front of my desk and I was ruining the rug by rolling over the edge of the persian rug. The mat immediately solved the problem. The area under my desk is wood and the mat had no problem transitioning from the rug to the wood. It looks and feels robust and I am confident that I will get several years of use out of the mat. Your catalog should give the thickness of the mat and the lengths of the pegs that grip the rug (I would estimate the grip peg lengths as 1/8" and the thickness as 3/32")
This is for the chair at my computer and replaced a similar mat which had given many years of service. I think the mat is a little too soft although my carpet is not high pile so that the chair does not slide as smoothly as did the prior mat.
CANNOT ANSWER THE CONS BECAUSE I JUST RECEIVED IT. Noticed that after a week and indentation where the wheel is leaves an imprint in the Chairmat. Hope it is not permanent.