This chair mat is smaller than most and that is what I needed for my home office. I am using it on medium pile carpet so it does tend to creep some. Over all the price was right for home use. Other office supply sources did not have one this size.
The mat is a good size and protects the carpet; however the plastic used is quite thin and I still create little divots with the chair castors. Also its expensive for the thinness of the plastic.