Europe Size 18 to US: 2XL

Europe Size 18: Corresponds to a wrist circumference baseline of 16.5 $\text{cm}$ (6.5 $\text{in}$), bracelet length of 18 $\text{cm}$ (7.1 $\text{in}$), and fit classification Standard / Regular.

US: 2XL: Corresponds to a wrist circumference baseline of 20.5 $\text{cm}$ (8.1 $\text{in}$), bracelet length of 22.5 $\text{cm}$ (8.9 $\text{in}$), and fit classification Relaxed / Expanded.