US: L/XL to Europe Size 48

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 48: 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.