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.
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.
As received this mat emitted toxic gas. Placing it in direct sun for a day has eliminated the problem [SO far).. The mat should never be in the house or offlice after unpacking until the described sunning is done. Otherwise it is good so far.