Ordered this chair mat along with a case of paper and it was at our house the very next day. Great savings and superbk delivery. Items were exactly what we ordered and in good condition.
After reading other reviews I was a little concerned about ordering this product BUT I have been using it for a little over a week now and I think it is absolutely great. I needed to replace an old mat that my chair wheels kept making little divots in. I couldn't roll the chair easily. This mat has totally solved that problem! No more divots. My chair rolls easily even after not moving it around for long periods of time. I have about 1" thick carpet/pad and every other mat I have tried has sunk into the carpet. This mat is thick enough that it doesn't sink. Some of the other reviews have said they had problems getting the mat to stay in place. I don't seem to have that problem. The grips on the bottom stuck to the carpet nicely and the mat has not moved from where I put it down. One note of caution though...This is a thick mat. Make sure you order a size that you will not have to "trim".
Arrived by Staple's free delivery to my home. Was delivered flat in very cold weather. Allowed to lay flat at room temp for 2 days then removed adhesive labels and cleaned with mild soapy water rinsed dried and now lays and appears as expected. This is a replacement for a previous 5 year old mat in my home office.
I've had this for just over a week now and I noticed that the mat shifts from normal use. Just this morning I measured that the mat had moved 6 inches forward under the desk. It only stopped because it hit one of the legs on the desk. I'm using this on a LOW pile carpet with a 5 caster rolling chair and I only weight about 180lbs. As others have reported the 'nubs' on the bottom of this mat are worthless. Furthermore the thickness of the mat is not substantial enough to warrant being called a 'medium pile' mat. As I said I'm using this on a low pile carpet and the chair makes a noticeable indentation within just a minute a sitting down. I fully expect this thing to crack within a year. Just poor quality in every regard.