US: 2XL to Europe Size 59
Cross-market men’s hat and headwear conversion mapping 2XL specifications into 59.

Analyzing Hat Size Equivalence Across Markets
US: 2XL: Features a head circumference of 62.5 (24.6 ), measured above the ears where the hat sits comfortably.
Europe Size 59: Features a head circumference of 59.5 (23.4 ), measured above the ears where the hat sits comfortably.