US: XL to Europe Size 50

US: XL: Features a chest width of 116 $\text{cm}$ (45.7 $\text{in}$), shoulder breadth of 52 $\text{cm}$ (20.5 $\text{in}$), and sleeve length of 95 $\text{cm}$ (37.4 $\text{in}$) 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.