I found it difficult to get it down on the floor & was scratched on my arms & legs. The place were the mat is used is in a small area so I do have to admit that I didn't have much room & I was doing the installation myself. Very nice mat.
This mat although inexpensive is quite strong durable and carpet friendly. I liked it so much I went and purchased a second one with a third one soon to follow.
The GREAT thing about this chair mat is that the points on the back of it DON'T HURT. They're flattened pyramids. An improvement that should've been made long ago.
An under desk carpet protector doesn't get any more basic than this. I've had it for about a month and it has performed fine. Although I consider these an expendable the test is how long it lasts before cracking into little pieces.