There is no sense of instability I was worried at all. There is support under the bottom and there is no worry of falling. I also have a solid side hold. Underlay pads are also slip-resistant, so even if you stop suddenly you will not jump out or slip up. One slip is attached to the slip pad. Although one rubber band for fixing is attached, I do not feel much meaning. I think that there is no problem with fixing even if it is not.