Europe Size 49-18-140 to US: XS

Europe Size 49-18-140: Corresponds to a lens width baseline of 49 $\text{mm}$ (1.93 $\text{in}$), bridge width of 18 $\text{mm}$, temple arm length of 140 $\text{mm}$, and fit classification Standard / Medium Frame.

US: XS: Corresponds to a lens width baseline of 46 $\text{mm}$ (1.81 $\text{in}$), bridge width of 16 $\text{mm}$, temple arm length of 135 $\text{mm}$, and fit classification Narrow / Petite Frame.