I waited a week to comment. Blunt cleats may be friendly but don't anchor mat; needs daily adjustment. 5 chair rollers leave davits. I am not happy with this your thickest mat. I'd have returned had it been your lower grades and cheaper mats. If this cracks I will return.
Placed the pad over a thinly padded rug. It was difficult to move my chair because the casters were sinking in making indentations in the pad.THE PAD WAS RETURNED TO STAPLES.