Hats In The Belfry Tammany Bowler Derby Hat Navy Blue Wool Felt size L READ Inside measures 22.5" - size tag is missing but this was purchased with a large lot of other size L hats Please let me know if you have any questions or need any additional photos FEATURES Style: Bowler Material: 100% Wool Felt Dimensions: 4" Crown, 1 7/8" Brim Band: Grosgrain Ribbon