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United Kingdom Size 38–40 to US: XS (26–28)

Cross-market men’s underwear and boxer brief conversion mapping 38–40 specifications into XS (26–28).

From Standard & Size
UK
Converted Equivalent
US
XL (38–40)
Based on row equivalence: US XL (38–40) | EU 54–56
Standard cross-walk matching active anthropometric row parameters.
United Kingdom Size 38–40 to US: XS (26–28) Conversion

Analyzing Underwear Size Equivalence Across Markets

United Kingdom Size 38–40: Corresponds to a waist stretch range of 96.5–101.6 cm\text{cm} (38–40 in\text{in}), hip circumference of 111.8 cm\text{cm} (44 in\text{in}), thigh clearance of 63 cm\text{cm} (24.8 in\text{in}), and fit style Relaxed Boxers & Extended Boxer Briefs.

US: XS (26–28): Corresponds to a waist stretch range of 66–71 cm\text{cm} (26–28 in\text{in}), hip circumference of 84 cm\text{cm} (33 in\text{in}), thigh clearance of 48 cm\text{cm} (18.9 in\text{in}), and fit style Briefs, Trunks & Boxer Briefs.

Other Conversions to US: XS (26–28)

United Kingdom Size 26–28 → us-xs-26-2826–28 to us-xs-26-28
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United Kingdom Size 28–30 → us-xs-26-2828–30 to us-xs-26-28
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United Kingdom Size 31–33 → us-xs-26-2831–33 to us-xs-26-28
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United Kingdom Size 34–36 → us-xs-26-2834–36 to us-xs-26-28
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United Kingdom Size 38–40 → us-xs-26-2838–40 to us-xs-26-28
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United Kingdom Size 42–44 → us-xs-26-2842–44 to us-xs-26-28
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United Kingdom Size 46–48 → us-xs-26-2846–48 to us-xs-26-28
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