With this footstool perfectly adapted to the bathroom, he finally managed to pass the course. It seeks more gear with us, he rides alone on the toilet; and elsewhere, now just to help him sit and it's done.
The footstool is Babybjörn good quality plastic, durable and easy to clean.
It has a non-slip rubber layer (in white on the photo), but also on top underfoot. No risk of slipping so even wet (bathroom, toilets ...).
A great product at a reasonable price.