Packaging Design Open Packaging Sleeves by Koen van Rijen This project is called Open and includes six different photography magazines which are bundled in these custom-made sleeves. The sleeves are made of a thick, heavy, anthracite cardboard with an embossing and screen printed numbers 1-80 (the number of subscribers). The client personally stamped each box during the presentation which makes every box a unique one. The title on the boxes is quite literally open, because the cut-away in both boxes show the letter O when placed next to each other.