Now these are some cool cotton caps! Men's Vintage Cotton Plaid Beret Style Flat Cap. I enjoy wearing a casual cap for all occasions. Add one or all of these cool caps to your collection. Adjustable side straps. Other names for this duckbill cap are: ivy caps, duckbill caps, Gatsby caps or newsboys, this cap has an distinguished look to any man’s wardrobe. With a rounded, low crown and a short stiff brim, these hats 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. Cap size: 22"-23"/56-59cm. Delivery: 14-21 days.