Europe Size 50 to US: XS

Europe Size 50: Features a chest width of 104 $\text{cm}$ (40.9 $\text{in}$), shoulder breadth of 47.5 $\text{cm}$ (18.7 $\text{in}$), and sleeve length of 89 $\text{cm}$ (35 $\text{in}$) with built-in layering allowance.

US: XS: Features a chest width of 88 $\text{cm}$ (34.6 $\text{in}$), shoulder breadth of 42 $\text{cm}$ (16.5 $\text{in}$), and sleeve length of 81 $\text{cm}$ (31.9 $\text{in}$) with built-in layering allowance.