The mat wasn't rolled when delivered and had some lumps but it flattened right away. It helps my chair glide while protecting the carpet underneath as I had hoped and looks good.
This does not have to sharp pointy pins on the bottom. As a result it slides on the carpet and every few days i have to pull it back where it belongs. Wish at least some of the pins on the bottom were the sharp ones. They stay put.
I know 200 lbs is heavy but I expected this mat to not sink into the carpet. I am not completely happy with it. Time will really tell my satisfaction level.