Please allow slight 1-3cm difference due to manual measurement and a little color variation for different display setting,
thanks for your understanding!
1 inch = 2.54 cm
Attention plz: If your kid is chubby, we recomend choosing a larger size, thanks.
Thank you and nice day!
 

Size(S) 3M:0-3months  Length(cm)38  Chest width(cm)20 
Size(M) 6M:3-6months  Length(cm)40  Chest width(cm)21
Size(L) 9M:6-9months  Length(cm)43  Chest width(cm)22
Size(XL) 12M:9-12months  Length(cm)45  Chest width(cm)24
Size(XXL) 18M:12-18months  Length(cm)47  Chest width(cm)25
Size(XXXL) 24M:18-24months  Length(cm)49  Chest width(cm)27