United Kingdom Size Maximum to US: Slim / 49mm

United Kingdom Size Maximum: Corresponds to a nominal width of 69 $\text{mm}$ (2.72 $\text{in}$), length of 220 $\text{mm}$ (8.66 $\text{in}$), average structural girth of 138 $\text{mm}$ (5.43 $\text{in}$), and fit category Maximum Bariatric / Ultra Wide.

US: Slim / 49mm: Corresponds to a nominal width of 49 $\text{mm}$ (1.93 $\text{in}$), length of 175 $\text{mm}$ (6.89 $\text{in}$), average structural girth of 98 $\text{mm}$ (3.86 $\text{in}$), and fit category Snug / Close.