These collectible banknotes are made of a special flexible material. The manufacturer claims that the banknotes are gold-plated, but I cannot confirm this with certainty. The fact is that the banknotes are extremely attractive and appear "gold." They are perfect copies of currently used banknotes. They are ideal as gifts, decorative items, or collectibles. The banknotes will be protected with special sleeves, carefully packaged, and shipped in an insured package.