Poligon has taken an entirely new approach to the calendar. Using the same techniques used to create metal sculptures, Poligon allows days to be permanently marked by pushing in a tab as each day passes. The user keeps track of the date in a delightful way and can mark future events like birthdays or holidays. This can be done with a full fold or half fold, perhaps signifying a less important event. Over the course of the year, the calendar transforms into something deeply personal. There are two types of calendar—folded and flat.