Lot of babies is quickly grown out of their infant carseat; however, they are not quite ready for the forward-facing carseat. The convertible carseat allows the babies continuing in the rear-facing position up to 14kg (30 lb). It also has the forward-facing option for next stage. Babies who are over 9kg (20lb) and 1 year can be switch to forward-facing position; the forward-facing seat can be used up to 18kg (40lb) or 22kg (48lb). Some models can be held up to 30kg (65 lb).