The mat "walks" on the carpet. I have to adjust it a couple times a day. I don't have a deep pile rug and the wheels sink in. I tried to save a few bucks now I'll have to spend more for a better one.
I would have preferred this pad be thicker as I placed it on top of thick carpet. For the moment it seems to be doing fine supporting me and my desk chair.
I had to replace a chair mat that I had used for many years and this was the perfect replacement. I always get great help at The nearby Staples store and I got what I needed.
Poor durability slides around the rug under chair. Needs to be repositioned at least every 2-3 days. Wheels of chair made imprints in it on day one making it difficult to move around. Would not recommend.