You should ask for this review after 6 months-1 year. The mat is fine but it's brand new so of course it would be fine. They typically start cracking and breaking as they come up on a year old. If this thing stays in one piece then that would be a 5-star rating but I can't know if that will be the case right now and so cannot give a 5-star rating on quality yet especially one that I may be sorry for a few months down the line. I'll give a 1-star rating for now as quality remains to be seen. Forcing the star-rating after one week is going to bring your numbers down.
When we bought the Staples 36" x 48" Chair Matt for Flat Pile Carpet with lip we knew this was going to be the winner. We have used similar mats but the simply does not do the incredible job this Chair Matt does. It stays on the rug it does not slide away and makes it easy to roll from one side of the desk to the other. We highly recommend this Chair Matt.
I just needed a 3 foot by foot plastic floor mat to go under my computer chair which is on a carpeted floor. Could not find any mats with these dimensions so I needed one which was firm/thick enough to support my chair with me sitting on it yet thin enough to cut the portion of mat which goes under my computer desk off because that area does not need extra carpet protection ( I don't wear shoes when I am sitting at my computer (TMI?). Works just fine and the price was right.