I'm using the chair mats in my sewing room which has berber carpet. I'm hoping these will hold up better than ones I've purchased in the past. The old ones cracked and chunks broke out of them after just a few months of use. These are really smooth and easy to clean and chairs roll really nice on them.
Came rolled up so I could not use it for a couple of days. After that it worked fine however. I would recommend not using this on a hard wood floor though as it would scratch it. It is great for my carpeted floors though.