US: M to Europe Size 46

US: M: Features a chest width of 100 $\text{cm}$ (39.4 $\text{in}$), shoulder breadth of 46 $\text{cm}$ (18.1 $\text{in}$), and sleeve length of 87 $\text{cm}$ (34.3 $\text{in}$) 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.