US: L to Europe Size 15

US: L: Corresponds to a wrist circumference baseline of 17.5 $\text{cm}$ (6.9 $\text{in}$), bracelet length of 19.5 $\text{cm}$ (7.7 $\text{in}$), and fit classification Standard / Regular.

Europe Size 15: Corresponds to a wrist circumference baseline of 14 $\text{cm}$ (5.5 $\text{in}$), bracelet length of 15 $\text{cm}$ (5.9 $\text{in}$), and fit classification Snug / Compact.