In spite of meeting the pile height requirements for this chair mat its spikes on the underside do not hold it in place and it slips constantly. Disappointed.
For some reason all around the edge of the mat there was a raised edge that made it a tripping hazard ... as well making it hard to flatten the mat out for use. Ended up returning the mat.
I bought this mat to replace my last one which was also bought at Staples. I believe it's identical to that one My old one started to dry up and crack. I had the old one for over 8 years before the cracks started to appear. Considering I use my desk almost every day for over 8 hours and I'm no lightweight I feel I got great use out of it. As soon as my brother visits I'll put it down and try it out. Any problems with it I'll post an update.