Grafisch Atelier Den Bosch commissioned the Letterproeftuin to create a new year’s gift for their ‘relations’. Based on the printing house tradition of producing a free calendar to celebrate a new year and to showcase new printing techniques, we came up with a special calendar design. It changes with every season, thanks to six layers of thermochromic inks that alter in transparency and opacity depending on the temperature of the season. Motion design by Peter van de Riet.