US: 4XL to United Kingdom Size 6

US: 4XL: Corresponds to a waist/hip size of 105 $\text{cm}$ (42 $\text{in}$), waist range of 97–107 $\text{cm}$ (38.2–42.1 $\text{in}$), total strap length of 115 $\text{cm}$ (45.3 $\text{in}$), and fit classification Expanded / Plus.

United Kingdom Size 6: Corresponds to a waist/hip size of 70 $\text{cm}$ (28 $\text{in}$), waist range of 60–70 $\text{cm}$ (23.6–27.6 $\text{in}$), total strap length of 80 $\text{cm}$ (31.5 $\text{in}$), and fit classification Waist / Snug Cinch.