Don't waste your money on this chair mat. It curls up and then its hard to roll your chair over it. I have had to set heavy boxes on the corners to hold them down but it hasn't helped. By the time I realized that it was just not going to work no matter what I did and wanted to return it I had exceeded the time limit on returns.
One side is smooth and the other textured. The smooth side slips easily and is an accident waiting to happen. I had to apply Velcro strips to hold in place.