If you have the slightest problems with junior getting to use his or her ski helmet the solution is the uber cool and safe Sweet Blaster II with integrated MIPS solution that enhances safety. The MIPS reduces rotation forces on the brain.
Besides the cool design, it is comfortable and lightweight. To make a good, precise fit and in order to be able to grow along the ski helmet has the Occigrip turn dial fit system.
The liner is moisture wicking, removable and washable.