This is just the right size for working at my small desk but I have only had this a few weeks and already there are large dents in the mat where I apparently sit with the rollers in the same place every time I sit down to work... I have a feeling this won't last very long and am wondering if I should have spent a few more dollars to get a better quality one. It isn't digging into the carpet as much but I just can't see that it will last more than a year. Granted I am not a skinny person but I had expected better and have had better luck with other plastic floor mats.