US: S to Europe Size 42

US: S: Features a chest width of 92 $\text{cm}$ (36.2 $\text{in}$), shoulder breadth of 44 $\text{cm}$ (17.3 $\text{in}$), and sleeve length of 83 $\text{cm}$ (32.7 $\text{in}$) with built-in layering allowance.

Europe Size 42: Features a chest width of 88 $\text{cm}$ (34.6 $\text{in}$), shoulder breadth of 42 $\text{cm}$ (16.5 $\text{in}$), and sleeve length of 81 $\text{cm}$ (31.9 $\text{in}$) with built-in layering allowance.