We met with the orthothist (sic?) who custom makes the helmets out of foam and laminate. First the cotton balaclava, followed by the marking of the midline and the ears with a pen followed by plaster of paris molding. The gauze with the plaster of paris on it is wet, molded to the skull and allowed to set. Removed and a cast made from that. We're back in 10 days and then in a month. She'll be in the helmet for up to 6 months. Pink of course... :-)