sc_Sanmar RS4400
Infant Onesie
NB 06M 12M 18M 24M
Chest Width 7 1/4 8 3/4 9 3/4 10 3/4 11 3/4
Body Length at Back 11 1/2 12 1/2 13 1/2 14 1/2 15 1/2
Sleeve Length 2 1/2 2 3/4 3 3 1/4 3 1/2

 

For reference only. Fit may vary depending on materials and manufacturer.