https://designloft.blogspot.com/2020/02/who-manufactures-size-9-months-for-baby.html
The Design Loft: Who manufactures a size 9 months for baby clothes?
Size 9 months for baby clothes is a half size between 6M and 12M. Not all manufacturers produce this size.
the design loft
https://designloft.blogspot.com/2014/04/new-rules-for-soft-infant-and-toddler.html
The Design Loft: New rules for soft infant and toddler carriers
There are new regulations approved by the CPSC for soft infant and toddler carriers.
the design loftinfant and toddlernew rules