I wouldn't recommend it. As you can see from the attached 2 photos the chair sinks into it and then it is hard to roll it around. Very thin material and not very strong. Needs to be a thicker material.
I needed a replacement chair mat that would work for a 6 foot "church" table since I move back and forth along the length of the table using different keyboards during the work day. This fit the bill wonderfully. It *IS* a little thin for medium or deeper shag carpet and deforms under the chair wheels after a short time such that I have to wiggle to get the chair to move out of the wheel pits but for the size price and AVAILABILITY I'm ok with it. If it was really an issue I would have dropped some much larger dollars on a tempered glass mat - it's not THAT big an issue. :-)
The mat was thinner and not as large as the previous one we had. It is o.k. but not great. We had thought of returning it and looking elsewhere however after we took the two scotch tapes that kept it in a cylinder we didn't. The residue from the scotch tape was so sticky we had to WORK to remove it with mineral spirits. Disappointing item.
I love this chair mat! I was apprehensive about buying one but I'm glad I did! My husband took over a desk and with the rolling chair the carpet was just beginning to lump so the mat took care of it!!
This would have been great if my carpet pile was thinner. I am going to order one for a thicker carpet. Plus my husband is over 200 pounds so that is another issue.