SK Hat shop Men's Winter Wool Snap Open Duck Bill Curved IVY Cabby Driver Hat Cap 45% Wool 5% Rayon 50% Polyester Size: Unisex, Available in S/M, L/XL Head measurement: S/M (56cm, 22", Size 7), L/XL (58cm, 22-3/4", Size 7-1/4) Brim/Visor: 2-1/8" from Interior Sweatband