I like the 2mm thickness of the mat and the large size. It almost covers my desktop. Mine came rolled and it easily un-rolled and lies flat, no curling. There is an area near the edge that I can feel some slight waves but the edges are flat to the desk. I could probably put a weight on the waves if it bothered me but it doesn't. Because this is for my work desk, I like to put small notes under the mat for easy reference. I have not had the mat very long but it seems like a quality product. If I had the need for another one, I would definitely buy it again.
Clark 
