Cant use it. Put it under my office chair and the rollers just sunk into it, so I cannot move the chair at all!

This mat was just right for my treadmill. It has fulfilled its purpose.

Like another reviewer, this mat makes your wheeling chair not move at all. At least on my carpet which is quite a high pile. So if you're buying it to protect your carpet then it does that (hence 2 starts instead of 1), but if you're hoping this can allow your desk chair to move freely, do not buy this purchase. I wish I hadn't.

Mat is quite flimsy,. I expected it to be more rigid but is quite soft so not sure it iwill stop markings on the carpet which is why I bought it.

exactly as I expected