Staples has always been a reliable source for my office needs. This Chair Mat looks of high quality was packed well timely shipped to my door and I installed immediately. It immediately lay flat. Chair rolls easily on mat and much easier than carpet.
Compared to prior chair mat the mat is not as thick; therefore while sitting in office chair the mat sinks a little into carpet. And it's not my weight (only 155 lbs)!!! But it does the job.
I have medium-thick wall-to-wall carpet in my study and I have a lighter weight (1/4" thick) oriental carpet on top. Over the past 3 years I have had 2 carpet chair mats fail both cracked after approx a year of service. Staples advertised a medium pile carpet chair mat that was reasonably priced although slightly higher than the volume hardwood floor and carpet chair mats they carry in most stores. There is a noticeable difference in mat construction from the typical store model. Rather than heavy ridged construction running across the mat this has a short protruding grip pointing downward in about 1 inch intervals across the mat. The grips need only be long enough to prevent the mat from 'creeping' across the carpet. So far the mat appears to be holding up well. The chair moves across the mat with ease. Only time will tell its durability but I do believe the difference in design may account for better performance over thicker pile carpet.
When the product I wanted a clear office mat for an office chair was not available in the the store the customer service person ordered it for me on a computer in the store. He promised that it would be at my house the next day. I was doubtful. But it arrived the next morning. Great service and great product.