US: 0-3M to Europe Size 5
Cross-market children’s gloves, mittens, and hand warmers apparel conversion mapping 0-3M specifications into 5.

Analyzing Gloves, Mittens & Hand Warmers Size Equivalence Across Markets
US: 0-3M: Corresponds to a hand width baseline of 5.5 (2.2 ), hand length of 8.5 (3.3 ), and age range 0–3 .
Europe Size 5: Corresponds to a hand width baseline of 7.5 (3 ), hand length of 14.5 (5.7 ), and age range 24–48 .