On this page, you'll find all of our Maxi-Cosi car seats for children up to 12 years old. There are also Maxi-Cosi car seats for up to 12 years old that you can already use for your newborn baby, like the Maxi-Cosi Emerald 360. Consider the height of your child and choose the right children's car seat. Children in Germany are obligated to be in a car seat until they're 150cm. Safety comes first for us. All our car seats have an Isofix attachments and meet the latest security norms R129/i-Size.