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).