This is the 3rd mat I have purchased and they seem to be getting worse. They crack and get holes right in the middle of the mat. Doesn't last as long as I would have expected. Will be checking for an alternative this time around.
Protective chair mats are IMHO a purchase which is a necessary evil. Mats do not add to the decor of the room but I must say it goes a long way in protecting the rug surface from chair roller wear. Do tend to last years. Hope the material does not discolor over time.