Here is an example of what size setting the diaper should have for the different age levels. However, all children are different in physique, so this can vary from child to child.
When your child weighs 6 kg at 2 months of age, they will most likely be able to fit Natural Snap-In onesize diaper. It can be used until your child weighs about 18 kg and becomes diaper-free.
Natural Snap-In Onesize was:
2-8 months size small – diaper buttoned all the way in.
8 months -2 years size medium – the diaper buttoned in the medium size setting.
2-3 years size large – the diaper unbuttoned completely.
