What age do they move from small to medium nappies?

[*Beema*]

DD grew out of the small IB at around 10 months of age, but she wasn't a particularly big bubba

[mollycat]

Miss M still fits into smalls (she was weighed today at 6.2kg), she went into smalls at about 1 week old (2.9kg born). She also fits mediums with the snaps crossed over.