Baby size is as follows (different from the amount of law can be error 1-2CM)
XS: back length 16cm bust 27cm neck around 20CM or so
S: back length 20cm bust around 32cm around neck 23CM
M: back length 25cm bust 37cm around the neck about 26CM
L: back length 30cm bust around 44cm about 30CM neck circumference
XL: back length 35cm bust around 49cm around neck 32CM