US: XS to Europe Size 9.0
Cross-market men’s glove and mitten conversion mapping XS specifications into 9.0.

Analyzing Glove Size Equivalence Across Markets
US: XS: Features a palm circumference of 17.5 (6.9 ), finger length of 7 , hand width of 7.5 , and overall hand length of 16.5 .
Europe Size 9.0: Features a palm circumference of 23.5 (9.2 ), finger length of 9 , hand width of 9.5 , and overall hand length of 20.5 .