We took it up almost immediately. We have very expensive new hardwood floors and we could see that would scratch it. We are getting a rug and the appropriate mat.
I work in a high activity workplace lots of hustle and bustle and chair movement. Our floor happens to be tiled with deep grooves for the grout in which our office chair wheels would get stuck in. Very annoying. Other chair mats we had would slide all over the place making them a safety hazard. This one sits in place actually nice to walk on (softer feel than tile) and so far provides a smooth rolling surface. The large area allows for not sliding off any direction I decide to roll too which is even better. Go big or go home!