Children until 7 years (born after 28/11/2012) are entitled to a free skipass for the same period on purchase of a skipass by the adult attendant. This free offer refers to "an attendant for each child".
IMPORTANT: Buy the seasonal skipass and get the summer pass cheaper!* *The price for the summer pass for an adult is 85,00€ instead of 140,00€ (saving: 55,00€) See here what mountain bikers, families, wanderer and alpinists can do with the summer pass.