This floor mat changed my life. My general outlook has drastically improved now that I can roll my computer chair easily with the confines of said mat.
I am not completely happy with this product. The wheels on my desk chair leave deep indentations and that makes it difficult to move the chair. I previously had one of these mats when I was working and I remember it being somewhat thicker more like a tile of plastic. When I move the chair I have to get up off it and the dents remain in the plastic long after I have relocated the chair. Twice this thickness would maybe be better. This is too soft. I have this over a rug and feel it is not what I previously had in my work. I would only recommend this for placement on a hard surface.