We have tried a dozen different toilet seats and this is by far the best. First of all, it doesn't have any padding where the child sits, so it's easy to clean. Secondly, the opening is quite large even for a bigger child. Thirdly, because it has silicone all around, it doesn't slip at all on the toilet bowl. Anyone with kids knows very well how much they fidget when sitting on the toilet, and the last thing we want, especially with boys, is for them to move around while doing their business. I also add as a bonus that it has two holes in the back which are very convenient if you have a hook in the bathroom to hang it easily so you don't have to touch it here and there