"There is no rule or requirement about helmets, but they have become the absolute norm with kids. Helmets are cool!⁠ Children might fall down and hit their head, but it's more likely that someone else might be skiing out of control and collide with them. Helmets will also keep a child's head warm and they're a good place for rad stickers.⁠ Parents should role model safety (as well as being cool) by wearing a helmet too. Alas, most of the cartoons show adults without helmets - that was the illustrator's fault."