This product makes a big deal about how good it adheres to carpeting. Except it does not. Product moves backward about one to one and a half inches each day from the motion of the desk chair atop it. At the end of a week the product is eight to ten inches back from where it was at the beginning of the week.
The flexibility made me wonder if this was going to cause problems rolling a chair across it. So far it has worked well allowing me to move between my computer and my writing desk.