Arrived with a crack at the edge of the mat because Staples rolled it up and then used packing tape to deliver. Additionally the tape was difficult to remove and left a residue that is picking up dirt -- so the mat constantly looks dirty.
Very smooth for chairs with rollers. Large enough to be able to glide over to either side of an L-shaped desk. Stays put. The "lip" that sits under the front of the desk works well also it allows chairs to be pushed in easily without rolling off of the mat. This was a great purchase for us and I would definitely buy again for the other offices.