Kam has not, uninvited fold up with the idea and is fixed, as long as do not necessarily two men on. Has many setting levels, also does not slip on the floor. The mat does not dissolve as long as you do not herumpiddelt with your fingers in mind. If this is done nevertheless, it is a lightweight, abzubekommen them, so rock solid that does not sit, but if you are doing with the footstool, what to do with it, there are lots if no problems.
