US: Size 2 to Europe Size 4
Cross-market children’s diapers, nappies, and training pants apparel conversion mapping Size 2 specifications into 4.

Analyzing Size Equivalence Across Markets
US: Size 2: Corresponds to a weight range of 5.4–8.2 (12–18 ) and an approximate age bracket of 2–6 .
Europe Size 4: Corresponds to a weight range of 7.3–12.7 (16–28 ) and an approximate age bracket of 6–12 .