A good helmet for children: JUNIOR is safe, quite light at 390 grams and can grow with the child to a certain extent, as it can be adjusted to a head circumference of 49 to 53 cm thanks to a special inner construction. This is also child-friendly: thanks to the easy-to-use and safety-tested magnetic fastener, crying over pinched skin is a thing of the past. Well-functioning ventilation openings ensure that the child does not sweat under the helmet. They generate a flow of air that is distributed evenly around the head via the helmet's inner channels.