US: 3XL (46–48) to United Kingdom Size 42–44
Cross-market men’s underwear and boxer brief conversion mapping 3XL (46–48) specifications into 42–44.

Analyzing Underwear Size Equivalence Across Markets
US: 3XL (46–48): Corresponds to a waist stretch range of 116.8–121.9 (46–48 ), hip circumference of 127 (50 ), thigh clearance of 71 (28 ), and fit style Big & Tall Boxers & Briefs.
United Kingdom Size 42–44: Corresponds to a waist stretch range of 106.7–111.8 (42–44 ), hip circumference of 119.4 (47 ), thigh clearance of 67 (26.4 ), and fit style Extended Boxers & Plus Boxer Briefs.
Other Conversions to United Kingdom Size 42–44
US: XS (26–28) → uk-42-44XS (26–28) to uk-42-44
View
US: S (28–30) → uk-42-44S (28–30) to uk-42-44
View
US: M (31–33) → uk-42-44M (31–33) to uk-42-44
View
US: L (34–36) → uk-42-44L (34–36) to uk-42-44
View
US: XL (38–40) → uk-42-44XL (38–40) to uk-42-44
View
US: 2XL (42–44) → uk-42-442XL (42–44) to uk-42-44
View
US: 3XL (46–48) → uk-42-443XL (46–48) to uk-42-44
View