I bought two of these chairmats in the early morning and left them in my car while I went to work. When I came out in the afternoon my car was filled with the noxious odor of melted plastic. The mats were soft and maleable and almost rubbery. A day or so inside and they're back to normal. So the message here is not to leave these mats in a car when the outside temperature is 109-degrees!
I noticed that the newer mats replacing this one are thinner yet. The last one started breaking up in the middle. What does this say about the newer thinner ones? Yes the chair has the double rollers that were recommended! I probably would have purchased a thicker mat if one were available.
We purchased these to put in the kids' rooms at their desks so the chair wheels wouldn't catch the carpet. One is being used in our basement on a burbur type carpet the other is on a more plush carpet but still works fine.
We recently built a home office upstaris inside our 8' long closet. What we didn't plan on was the chair sitting on the guard rail for the doors. The transition is carpet to linoleum with a metal strip in the middle. After using the protector the carpet is no longer tearing up and the chair is no longer getting stuck in the rut of the rail. Smooth rolling back and forth sturdy construction and it's reduced the transfer of noise through the floor as well. That was a huge surprise and relief.
Use in the office at home. The carpet is very short and very low in size but I find that chairs do not roll across the mat easy. I have 2 types of chairs in the office and it just as easy to roll my chair on top the carpet as it is on the mat. The mat has deep dips from the rolloing casters.
Our rug is actually thicker than that recommended in the product description. Our chair rolls OK not great but OK. We purchased at [$] less a $5 coupon. Others were $49 and up. But I don't think a smoother "roll" justifies the step up price.