Due to its timeless, classic quality, most flag lapel pins are made out of die-struck hard or soft enamel. Both processes are among the most popular, dynamic designs for lapel pins.Die-struck means the shape of the American pin is stamped from a piece of sturdy metal. The stamping process creates a mold with recessed areas that will be filled with enamel color.The enamel color is then usually applied by hand. However, depending on the style, the enamel makes a difference in the finish.Soft enamel pins only have enamel filling about 75% of the recessed areas. This leaves dips rather than smooth surface. This creates a more textured, 3-D appearance that many people enjoy.Hard enamel pins have enamel filled to the top of the recessed areas. This means the surface is level and smooth. When the pin is heated to dry and set the enamel, you are left with a jewel-like surface.The hard enamel pins tend to have a classier look to them. Not to mention, they are a little more durable.Either design still leaves you with a stunning American flag lapel pin. The latter might be more perfect for the traditional American flag imagery.