Details: Chepstow Green Herringbone Flat Cap has a cotton lining for extra warmth. This beautiful tweed fabric has been woven in Wales and the flat cap is handmade in Great Britain!   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