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 the chair mat to replace one that was larger and had yellowed over the years. The size is smaller which is fine for the chair that I have. The only complaint I have is that because the mat is slightly thinner than the one I replaced and so the chair wheels leave an indentation on the mat after sitting on it and sometimes a little difficult to move. Otherwise appearance and quality is fine for the price.