I bought two chair mats. One is for my computer chair and the other is for my drafting chair. Both are exactly what I need. They are small compared to ones that are in offices but perfect for the locations and use in my house.
Only had it a few days. Too early to say I would recommend it to a friend so I am checking "no" for now and giving it only 3 stars. That could change after I've had more time on it. I hope it doesn't develop grooves.
being a heavier guy..have noticed dents in the chair mat after sitting for a while in the office chair. Has lots of fingers underneath so the mat doesnt move. Plenty of room to move around in the chair also. Maybe a thicker chair mat would help not to get those dents.