our previous mat had permanent holes in it that caused the chair to be immobile. The new mat is much harder and we anticipate that the same thing will not happen to the new mat.
This mat is wearing and will probably not last if like the last ones bought from Staples with this brand. Five plastic roller computer office chair is used. 200 lb user.
I like the mat very much. It has worked out very well. The only issue is the label that was glued to the top surface was difficult to remove and left discoloration on the area where it was attached.