This computer chair mat is nice. It works well under my chair and is easy to move around. It is however thinner than other mats I have purchased and therefore will very likely begin to crack sooner than I would like.
I've owned a Hard Floor Chair mat for a long time. Lately I purchased a new one and I am astonished to find out now that the mat doesn't only protect the floor but relieves muscle pressure. Distracted with work I hardly realized the muscle pressure used to stop my desk chair from slipping on a hard floor while working; what a great difference! Everyone should own one it is worth every penny.
Dents fairly easy. Have to make sure wheels don't land in the same space or you have to roll out of the dent. These mats will never be as firm as a floor so it works well enough.
Works okay I guess but dents very easily. therefore sliding back and forth is really not possible. Would probably work on flat carpet but I bought it since it said it was for carpet up to 3/4" thick. This carpet is not even 1/2".
I bought this as a replacement for the previous one which cracked and failed after one year. I think the plastic dries out and then it's no good. But I needed it so I got another. One thing to beware of: the cleats on the bottom are VERY SHARP and will rip and tear your skin. Try to get someone to help you carry it. I was bleeding in several places after moving it.