The name of the product is a French rebus where the roman number IX creates the word NUT (NOIX). To develop the project, first a mould was designed in a nut shape. The package was then designed out of laminated layers of corrugated board, with a breakable metallic sheet that holds the chocolates in place.
Reference:
http://packaginguqam.blogspot.com/2009/02/no9-thomas-jonkajtys.html
