Using this Globber kids helmet is easy. First, adjust the size using the dial lock to fit your child's head (51 - 55cm). Make sure the helmet sits level on the head. The 3 - mode LED flashing light at the back can be turned on for extra safety and visibility. When your child is done using it, store the helmet in a cool, dry place. Avoid exposing it to extreme heat or sharp objects. Clean the helmet regularly with a mild soap and a soft cloth. Remember, this helmet is approved to Australian Standards, but always check it for any signs of damage before each use.