The mat is too flexible. The chair wheels sink down into it and then it is hard to make them roll out of these indentations. The main reason I wanted this mat was so it would be easier to roll the chair around but it didn't.
I have to remain neutral on this item as only time will tell if it holds up under average use. I have tried more expensive mats that have cracked within a year. Even got different wheels for my chair but still had cracking. At least I am not out big bucks as it is disposable at this price.