US: 3XL (46–48) to United Kingdom Size 28–30

US: 3XL (46–48): Corresponds to a waist stretch range of 116.8–121.9 $\text{cm}$ (46–48 $\text{in}$), hip circumference of 127 $\text{cm}$ (50 $\text{in}$), thigh clearance of 71 $\text{cm}$ (28 $\text{in}$), and fit style Big & Tall Boxers & Briefs.

United Kingdom Size 28–30: Corresponds to a waist stretch range of 71–76 $\text{cm}$ (28–30 $\text{in}$), hip circumference of 89 $\text{cm}$ (35 $\text{in}$), thigh clearance of 51 $\text{cm}$ (20.1 $\text{in}$), and fit style Briefs, Boxers & Boxer Briefs.