US: 3T to Europe Size 86

US: 3T: Corresponds to a height baseline of 98 $\text{cm}$ (38.6 $\text{in}$), a weight baseline of 15.5 $\text{kg}$ (34 $\text{lbs}$), and a chest baseline of 56 $\text{cm}$ (22 $\text{in}$).

Europe Size 86: Corresponds to a height baseline of 86 $\text{cm}$ (33.9 $\text{in}$), a weight baseline of 12.5 $\text{kg}$ (27.5 $\text{lbs}$), and a chest baseline of 52 $\text{cm}$ (20.5 $\text{in}$).