I'm not completely satisfied with the chair mat as it is too short for the depth of my desk. The wheels leave deep gooves in the mat that I have to "oomp" to get it out. It also does not stay flat on the edges so I'm constantly kicking it. I've always wanted one but now I regret getting it. Sorry!!
The mat is satisfactory. However the thickness is insufficient to prevent chair wheel depressions in the mat after sitting too long before moving the chair.
This mat served the purpose for which it was purchased. With my grandchild in virtual school we needed this to make the transition to and from the desk more user friendly.