US: 3XL to Europe Size 9.0
Cross-market men’s glove and mitten conversion mapping 3XL specifications into 9.0.

Analyzing Glove Size Equivalence Across Markets
US: 3XL: Features a palm circumference of 28.5 (11.2 ), finger length of 10.8 , hand width of 11.6 , and overall hand length of 23.8 .
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 .