The step up seat works great, but certainly has room for improvement. I have a round, not elongated toilet, and it's a "comfort height" taller toilet. I've read reviews of people putting the seat directly on the toilet and on top of the seat. I tried both & found it fits best on top of my seat. It works good, but the plastic is a little weak and probably wouldn't handle much horseplay or erratic movements. The handles are nice to help balance while turning around to sit, but too much angled pressure will cause the step ladder to swing up. The bottom of the seat has also scratched the top surface of my toilet seat over a weeks worth of use. I put some thin, sticky back felt on the problem points under the potty seat to resolve it.