Great product but the Staples associate taped it into a roll for easy carry. Good idea but it left tape sticky all over the top surface of the mat. I got it off but took the gloss off the mat - no big deal but next time roll it up with the underside out!
The mat I replaced was 3 mm thick and lasted 25 years. This one unexpectedly came in quite a bit thinner. I don't think it's durable enough for sitting at the computer on a rolling office chair. It is already showing signs of wear.