My only disappointment is that when you sit in a chair on the mat it begins to leave indentations. My previous one did not do that. Otherwise it is good.
The mat is so thin my chair has made dents in the plastic causing my chair to grap in the indents. DON'T BUY ONE! Spend more and get a THICK mat to start.
The mat served our purposes for the most part of having a mat for rolling my chair on top of my carpet. But the mat is a little on the thin side and so the wheels are already making dips in it. I sort of wish that I'd bought something sturdier.