I rate this as average does help chair to roll on carpet. If it was thicker the chair would roll much easier when sitting. the product does have a chemicle smell for about a week that is not pleasant. We put ours outside on the patio to air out for a week. the price was a little more than i thought it should be but to be honest i should have shopped around more. the quality is average would i buy it again i don't think so. I have been a customer of staples for over 15 years but am thinking i should start shopping around and comparing products and prices.
I found the chair mat on a special on the internet. With the discount it was about $16 I could not believe the price. It was rolled up at will call for me so I didn't inspect it at the store. Unrolling it at home I was very surprised at the quality construction. I would recommend this mat to anyone who spends many hours at their desk.