Convertible child seats

Some forward-facing seats are designed to be ‘convertible’. This means that the seat can be adjusted as the child grows. Therefore, it might fit into several groups.

For example, a seat might be able to be converted to fit into groups 1, 2 and 3. It acts as a forward-facing car seat by using an internal harness like the picture below until the child reaches 18kgs (40lbs: Group 1). Then, the harness can be removed to convert the seat into a high-back booster seat (with back and head supports) that can be used with the normal adult seatbelt for a child up to 36kgs (79lbs: Groups 2 and 3).