It is perfectly satisfactory at present but the one it replaced (also from Staples) didn't last as long as it should have before developing rips and holes.
I've used this mat for 3 days and for me it works ok. I'm only 95 pounds and the chair does leave indentations which the chair automatically rolls back into. But the indentations aren't deep so I can still move around okay. I don't think it would work well for a heavier person. I have medium-pile carpet. I'd recommend a high-pile carpet mat for someone heavier.