This mat is excellent. My chair rolls on it very well. It is thick enough that the wheels don't cause depressions that require effort to get out of. It doesn't slip either;the cleats really hold on my medium-pile carpet.
I only weigh 145 lbs and the floor mat only seems to last 1 year. I don't know what the longevity should be but I feel it should last longer that than before cracking and breaking.
ARRIVED ROLLED WITH STICKERS ATTACHED. WOULD BE MUCH BETTER IF WAS SHIPPED FLAT AND WITHOUT STICKERS ON THE MERCHANDISE. STICKERS WHEN REMOVED STILL LEFT RESIDUE AND PAPER WHICH HAD TO BE SCRUBBED OFF. PRODUCT WAS OF GREAT QUALITY.