US: 18-24M to Europe Size 44

US: 18-24M: Corresponds to a height baseline of 86 $\text{cm}$ (33.9 $\text{in}$), a weight baseline of 12 $\text{kg}$ (26.5 $\text{lbs}$), and a chest baseline of 53 $\text{cm}$ (20.9 $\text{in}$).

Europe Size 44: Corresponds to a height baseline of 44 $\text{cm}$ (17.3 $\text{in}$), a weight baseline of 2.3 $\text{kg}$ (5 $\text{lbs}$), and a chest baseline of 35 $\text{cm}$ (13.8 $\text{in}$).