US: L/XL to Europe Size 46

US: L/XL: Features a chest width of 112 $\text{cm}$ (44.1 $\text{in}$), shoulder breadth of 50.5 $\text{cm}$ (19.9 $\text{in}$), and sleeve length of 93 $\text{cm}$ (36.6 $\text{in}$) with built-in layering allowance.

Europe Size 46: Features a chest width of 96 $\text{cm}$ (37.8 $\text{in}$), shoulder breadth of 45 $\text{cm}$ (17.7 $\text{in}$), and sleeve length of 85 $\text{cm}$ (33.5 $\text{in}$) with built-in layering allowance.