The seat is great. It fits perfectly to our relative angular Keramag toilet seat (toilet Model: Genova No.1). For that we need the largest setting, but it fits and does not wobble. Our son 29 months old. He alone can use the toilet using a stool and also make alone the seat on the toilet. So perfect. Small problem, there is only when he forgets to press the penis during Pipimachen down. Then urine running before under the FlexiFit. That would have been a longer inner edge better to solve. All in all, really good !!!