Heavy construction that allows the chair to move easily. Seems to be of good quality. However the spikes are not long enough to be used on heavy pile carpet. It still moves around with chair movement.
Order 2 Heavy Duty floor chair mats with lip for the office. We use them on top of a concrete floor. They hold up better than any other kind that I have ordered. Staples delivered the next day. Great service.
It's so hard to pick a chair mat with all the available options. Unfortunately my chair wheels after about 2 weeks started sinking and creating a groove in this mat making it not as easy to swiftly wheel around. PS I'm of average weight :)