Soft Flex® Craft Wire is a high quality, permanently colored copper wire. Due to a special enameling process, it is resistant to scratching, peeling and marring. After the enamel is applied, the wire is then clear coated to prevent tarnishing. Bare Copper is the only wire in the line that is not treated. If antiques and old findings are your medium, Bare Copper will patina - perfect for making that new project look like an heirloom.