US: Newborn to Europe Size 44-46
Cross-market children’s hats, beanies, caps, sun hats, and ear-flap hats apparel conversion mapping Newborn specifications into 44-46.

Analyzing Size Equivalence Across Markets
US: Newborn: Corresponds to a head circumference baseline of 36 (14.2 ) and age range 0–1 .
Europe Size 44-46: Corresponds to a head circumference baseline of 45 (17.7 ) and age range 6–12 .