As soon as the child can sit upright on its own. Helmets are only compulsory for bicycles up to 45 km/h. I recommend always wearing a helmet (also for scooters). For the child, I recommend the Alpina Carapax Flash helmet. Adjustable and in beautiful colours for boys and girls. Also available at Galaxus.

We have been cycling with our children since they were 9 months old. It is important that they can keep their head stable and sit independently. We taught our children that riding a bike without a helmet is forbidden, so also in the seat with a helmet. Greetings