I would not recommend this item if the chair on it has wheels. The plastic compresses under the chair wheels and the wheels get stuck in the depressions formed in the mat. I have another mat that I use with a chair without wheels and it works fine as you lift the chair out of the depressions when you move it.
I have only had the chair mat for a couple of days. It is not as thick as my old one and is already showing indentations from my chair wheels. It will be interesting to see if it lasts as long as the old one did.
Delivered dirty on both sides (not protected at all)..also with sticky unremovable label and also very thin because chair indents already made after two days
for a mat the store had several options all were expensive depending on depth of the carpet how would I know that? I bought the lease expensive and it is fine so far.