I use the four themes as a symbol for the four seasons. Herbs=Spring , Summer=Summer ;) , switzerland= golden autumn and freshness=winter. For me Ricola should be in our bags the whole year because there are so many things that can happen where we need it...on our first date, when we do sport or take a long walk through the nature of switzerland. That is one of the reasons i decided to draw a panorama illustration of a "year with Ricola". The DIY character stays the same :)
Ricola Limited Edition 2015