I received the mat promptly in good condition. Laid it out overnight to flatten. It is a bit bigger than my previous one which is good. It is a bit thin which may affect durability but appears well made. I would recommend it.
We got this all rolled up but we laid it down and put a dictionary on one corner plus the desk chair and it laid flat right away. Durable and works great.
The pad was rated for medium carpet pile. My Carpet is medium. The pad walks the prior pad that I had never had to be realigned this one requires it about every 4 days.
Since the price was good I ordered the High Pile mat instead of the Medium Pile mat I was using previously (although my carpet is only 3/4" deep). Based on the info on the Staple site I thought this would be an upgrade. After only a day there are indentations where the casters of my chair sit. They seem to "correct" themselves if I move the chair to another spot for a while but it's not ideal. I would think the problem would be even worse on an actual high pile carpet.