Europe Size 86 to US: 0-3M

Europe Size 86: 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 $\text{in}$).

US: 0-3M: Corresponds to a height baseline of 56 $\text{cm}$ (22 $\text{in}$), a weight baseline of 5 $\text{kg}$ (11 $\text{lbs}$), and a chest baseline of 41 $\text{cm}$ (16.1 $\text{in}$).