What is Seat types?

Seat types are the stages a car seat range covers. An infant seat carries a small baby, a convertible seat grows with the child, an all-in-one seat spans several stages in one shell, and a booster only holds a child who has already outgrown a forward facing seat with a harness. AXKID lists infant, convertible and all in one, while Baby Plus lists infant, convertible and booster. A single model covering several stages usually saves buying a second seat.