US: 3XL (46–48) to Europe Size 40–42
Cross-market men’s swimwear conversion mapping 3XL (46–48) specifications into 40–42.

Analyzing Swimwear Size Equivalence Across Markets
US: 3XL (46–48): Corresponds to an elastic waist range of 116.8–121.9 (46–48 ), hip girth of 127 (50 ), style tier Big & Tall Boardshorts & Trunks, and fit classification Big & Tall Fit.
Europe Size 40–42: Corresponds to an elastic waist range of 66–71 (26–28 ), hip girth of 84 (33 ), style tier Swim Briefs & Slim Trunks, and fit classification Athletic Snug Fit.
Other Conversions to Europe Size 40–42
US: XS (26–28) → eu-40-42XS (26–28) to eu-40-42
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US: S (28–30) → eu-40-42S (28–30) to eu-40-42
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US: M (31–33) → eu-40-42M (31–33) to eu-40-42
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US: L (34–36) → eu-40-42L (34–36) to eu-40-42
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US: XL (38–40) → eu-40-42XL (38–40) to eu-40-42
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US: 2XL (42–44) → eu-40-422XL (42–44) to eu-40-42
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US: 3XL (46–48) → eu-40-423XL (46–48) to eu-40-42
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