Men's Denim Vintage Cap - Just added another great cap to our collection of duckbill caps. Side buckle adjustment. Other names for this duckbill cap are: ivy caps, duckbill, Gatsby, Berets or newsboys. Featuring a rounded, low crown and a short stiff brim, these caps have been around for nearly 700 years. Flat caps are a symbol of the working man in Britain and soon became popular by higher class. Adjustable Size: 21.5"-23.5"/55-60cm. Delivery: 14-24 days.