I like the size and shape of the mat but the material is so soft that the chair sinks in making it almost impossible to move (roll) the chair while seated in the chair.
I had recently bought the Martha Stewart simple desk and fabric chair and realized it was too hard to move the chair in order to sit at the desk. I also didn't want the chair to push permanent holes into my carpet. I was afraid I'd stub my toe on the mat but it lays perfectly flat and hasn't given me a problem at all. I had expected to have to put $40 to $50 into such a mat but it was less than $20! You can't beat that value and even though it isn't the highest quality available it works perfectly fine!
The price of this mat was good but I also had a special Staples coupon that gave you an addittional $10 off which made this purchase a no brainer. I've only had this mat for about 2 weeks and it still looks good---only time will tell. The only downfall I have is the 2 loops on this mat that they use to hang up for display shows when you lay it down. So if you don't like these loops then you have to cut them off and we all know how bad it is to cut mats. So far for two weeks I'm happy.