This is the only mat that fit in my desk space. It is not thick enough to work on a carpet The wheels sink into tne mat and make it difficult to roll. I knew this was going to be the case but it was the only one that fit.
Finding this mat at Staples is as easy and the staff was very helpful. I took it home placed it under my desk/chair and now I am moving freely around my desk!
This mat is too thin. The chair wheels create an indentation that you really need to work at to get out of. It might work for a child someone very light.