US: Maximum / 69mm to United Kingdom Size Small Comfort

US: Maximum / 69mm: 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.

United Kingdom Size Small Comfort: Corresponds to a nominal width of 51 $\text{mm}$ (2.01 $\text{in}$), length of 180 $\text{mm}$ (7.09 $\text{in}$), average structural girth of 102 $\text{mm}$ (4.02 $\text{in}$), and fit category Small / Regular-Narrow.