Mats are clear enough that you can see the grain of the floor. The chair rolls easily. They were quite dirty [...] but they are very easy to clean. We had read some bad reviews and were a little nervous about buying these. We bought 2 mats (one for my desk and 1 for my husband's) and we love them! Great Product!
My "office" chair would bog down on the carpet. I do a great deal of my day getting up & down and because the chair was hard to move it made it agravating. NOW with the MAT my chair slides like a hockey-puck on ice.
I bought this mat to replace one about 10 years old that had cracked and in which holes had formed. The new mat is much thinner than the old one so thin in fact that I put the cardboard that it came in between the old mat and the new one. I seriously doubt it will last 6 months. Next time I'll spend the money and get one that's more substantial and sturdy.