It’s a good mat for the price. It would be better if the plastic was a little softer. From the indentations left after I use it for awhile I don’t see it being a long-lasting addition to my office. In a pinch it was what I needed at a good price. It is exactly as I expected.
This mat is not strong enough to prevent a chair from quickly wearing grooves and dimples in it. These slowly worsen eventually causing the plastic to crack. It is good for a few months of full time use at most.
I didn't think there would be a difference between flat pile and low pile carpet for this chair mat but there is. My chair made big dents in the mat and wouldn't roll at all (I am a petit woman). My carpet is very low pile but not flat. Unfortunately Staples doesn't sell any other kind of chair mat with a lip in their stores.