This mat is is the right size and better than some less expensive ones but my chair wheels dent it. It can be hard to move the chair as the wheels get "stuck" in the dips they make into the mat. The chair is also a Staples chair so it should not be a compatibility problem. The bottom line is I recommend finding a different mat one that is not as soft as this one.
Good sized mat and poly material seems as advertised however chair castors deform even this thicker design so are not free rolling. No matt cracking evident yet after four weeks.