US: Size 1 to Europe Size 1
Cross-market children’s diapers, nappies, and training pants apparel conversion mapping Size 1 specifications into 1.

Analyzing Size Equivalence Across Markets
US: Size 1: Corresponds to a weight range of 3.6–6.4 (8–14 ) and an approximate age bracket of 0–3 .
Europe Size 1: Corresponds to a weight range of 2.5–4.5 (5–10 ) and an approximate age bracket of 0–1 .