Very disappointed with this one. Bought it because we needed one and it was on sale but it is very flimsy does not stick to the carpet (edges come up or catch on chair/foot) and does not stop ANY static electricty!
This was a replacement for a cheaper mat so we do not know how well it will hold up under a years use. The limited lifetime warranty was the controlling factor in our purchase.
We purchased 2 of these mats. After reading the reviews I was concerned that they would not lay flat. When they arrived I flattend them out one ontop of another and then placed heavy 5 gal. jugs of water on the corners and center for 2 days. After that they were completely flat and we haven't had any problems with them.
I use this mat under the office chairs in my insurance business. The mat quality is much thinner than they used to be. One of main complaints is that the mat was rolled and tape that they used left a residue that we can't get off.
I have always used a chair mat under our computer chair in our den. The chair will not roll easily on the carpet and when the old mat wore out I replaced it with this mat. It is really nice doesn't have those ouchy sharp cleats on that old ones had and the chair moves easily on it. It's great and a good value.