Feather flags are often called windblade flags or blade flags, which is one of the most popular flag banner for advertising. Feather Flags aren’t new to this world, these flags have been used as far back as the 1970’s when fiberglass material was introduced to flag pole industry. It becomes popular since 1990s through internet. Teardrop shape flags were further developed from the feather shape later. Both feather flags and teardrop flags got their names from their shapes.