It is difficult to get a rug pad of this type in a large size, as well as one with a reasonable amount of thickness. I wanted one at least one-fourth inch thick. The description didn't indicate how thick; I chatted with someone assigned for this purpose on the website and she said it was one-fourth inch thick. It is in fact not that thick, thus I was somewhat disappointed. I think that accurate information should have been available. It is otherwise well-made and since I can't find a thicker one anywhere I will continue to use it.
Pad does the job. We selected this for our concrete floor and it works just fine. It did look like the pad was bound and I was concerned that it may have been a little larger than the rug, but it is not bound and easily trimmed so we are happy with the result.