US: 3XL to Europe Size 50

US: 3XL: Features a chest width of 132 $\text{cm}$ (52 $\text{in}$), shoulder breadth of 58 $\text{cm}$ (22.8 $\text{in}$), and sleeve length of 101 $\text{cm}$ (39.8 $\text{in}$) with built-in layering allowance.

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.