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

Analyzing Glove Size Equivalence Across Markets
US: M: Features a palm circumference of 22 (8.5 ), finger length of 8.5 , hand width of 9 , and overall hand length of 19.5 .
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 .