US: Size 6 to Europe Size 4
Cross-market children’s diapers, nappies, and training pants apparel conversion mapping Size 6 specifications into 4.

Analyzing Size Equivalence Across Markets
US: Size 6: Corresponds to a weight range of 15.9–25 (35–55 ) and an approximate age bracket of 24–48 .
Europe Size 4: Corresponds to a weight range of 7.3–12.7 (16–28 ) and an approximate age bracket of 6–12 .