Ferrecci Premium Lined Wool Clockwork Orange Style Classic English Derby Hat 100% Wool Felt Body Grosgrain Ribbon & Removeable Feather Accent Crown: 4.75 inches high Rolled Brim: 1.75 inches Plush Fully Lined Interior - Sizing: Small = 55cm - 6 7/8 | Medium = 57cm - 7 1/8 | Large = 59cm - 7 3/8 | X-Large = 61cm - 7 5/8