United Kingdom Size 50–52 to US: XS (32–34)
Cross-market men’s shirt and upper-body conversion mapping 50–52 specifications into XS (32–34).

Analyzing Upper-Body Size Equivalence Across Markets
United Kingdom Size 50–52: Corresponds to a chest width of 127–132.1 (50–52 ), neck collar girth of 47 (18.5 ), sleeve length of 94 (37 ), and fit style Extended Plus Fit.
US: XS (32–34): Corresponds to a chest width of 81.3–86.4 (32–34 ), neck collar girth of 35.6 (14 ), sleeve length of 81.3 (32 ), and fit style Slim Tailored Fit.
Other Conversions to US: XS (32–34)
United Kingdom Size 32–34 → us-xs-32-3432–34 to us-xs-32-34
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United Kingdom Size 35–37 → us-xs-32-3435–37 to us-xs-32-34
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United Kingdom Size 38–40 → us-xs-32-3438–40 to us-xs-32-34
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United Kingdom Size 42–44 → us-xs-32-3442–44 to us-xs-32-34
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United Kingdom Size 46–48 → us-xs-32-3446–48 to us-xs-32-34
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United Kingdom Size 50–52 → us-xs-32-3450–52 to us-xs-32-34
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United Kingdom Size 54–56 → us-xs-32-3454–56 to us-xs-32-34
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