The Maxi-Cosi FamilyFix is a base for 2 consecutive age groups. Use it from birth to approximately 1 year old in combination with the Maxi-Cosi Pebble or CabrioFix. And from 1 year to 3 years of age, you can use it with the Maxi-Cosi Pearl. That way, you won't have to buy a new base when your baby becomes a toddler. All parents know just how fast that goes. The FamilFix is mounted with ISOFIX, and the car seat can easily be clicked onto it. When installed correctly, the car seat gives off a clear, audible signal. That way, you can be sure you'll never do it wrong, and your toddler will always be transported safely. For sitting and sleeping comfort, the base has 5 different positions. When exhausted after a day of swimming, your child can comfortably fall asleep on the way home.