I liked the size of the mat as most of the others available are too large but the quality was poor. There are already indentations from my office chairs's wheels and I've only owned the mat for a week.
much better than the smaller thinner "economy" mat I origianlly bought. The cheaper mat became brittle discolored and started breaking/shattering in the center where the chair sits most. This new mat is much thicker and more flexible.