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.
When it was left on my porch it was draped across the box my chair came in. Took a couple days for the folds to completely disappear. Wheels of the chair don't seem to be leaving indents and I'm at the upper range of the chair's rating.
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.