Details: Tenby Purple Herringbone Classic Flat Cap have a polka dot cotton lining for extra warmth. Beautiful Purple Herringbone Tweed fabric has been woven in Wales close to the Brecon Beacons. Size guide: Hat Size.        Inches            Centimetres Small             21 inch              53cm Medium        22 inch               55cm Large            23 inch               58cm X Large         24 inch               61cm XXLarge       25inch                63.5cm