Thick durable mat for under chair at your desk. This mat stays put! No bubbling or popping up. I have had mats in the past be so stubborn, but this baby is awesome!! Clear so you can see the rug underneath, but this offers full protection to your rug or floor from chair indents. Perfect size for a standard desk. This was very easy to set up. We talking seconds. The directions recommended to let it lay flat overnight with heavier items such as books on top. Worked like a charm! This brand is no joke!! High quality all the way!!