It is just okay I can move my chair back and forth easier but I wish they would make one that is a little stiffer so that my chair rollers would not make sinks enough that it I hard to move the chair while sitting in it. If I were much heavier I could see that it might ;sink' in but I weigh 137 lbs and I would like to have one that would stay flat.....or at least flatter!!
The Mat was delivered so greasy and dirty and full of shoe marks that it took a half hour of cleaning so I could use it. A special handling fee was charged at time of purchase so I assumed it would be packaged so as to be clean and ready to use. I contacted Staples regarding this and never received a reply. After I got the mat clean enough to use it is servicing my purpose.