US: Extra Large (XL) / 60mm to United Kingdom Size Standard

US: Extra Large (XL) / 60mm: Corresponds to a nominal width of 60 $\text{mm}$ (2.36 $\text{in}$), length of 205 $\text{mm}$ (8.07 $\text{in}$), average structural girth of 120 $\text{mm}$ (4.72 $\text{in}$), and fit category Extra Large / Magnum Custom.

United Kingdom Size Standard: Corresponds to a nominal width of 52 $\text{mm}$ (2.05 $\text{in}$), length of 185 $\text{mm}$ (7.28 $\text{in}$), average structural girth of 104 $\text{mm}$ (4.09 $\text{in}$), and fit category Standard / Regular.