Europe Size 56-21-150 to US: M

Europe Size 56-21-150: Corresponds to a lens width baseline of 56 $\text{mm}$ (2.2 $\text{in}$), bridge width of 21 $\text{mm}$, temple arm length of 150 $\text{mm}$, and fit classification Extra Wide / Oversized Frame.

US: M: Corresponds to a lens width baseline of 52 $\text{mm}$ (2.05 $\text{in}$), bridge width of 19 $\text{mm}$, temple arm length of 145 $\text{mm}$, and fit classification Standard / Regular Frame.