This advent calendar ornament is made of acrylic and comes with a 31-day digital accessory with 10 themed icons, so you can line up the days according to the month of the month and write the corresponding month with the complimentary whiteboard marker. Change the day with the themed icons and gently slide the pentagram to the corresponding date to see it. The ornament also comes with a base made of beech wood. You can customize the calendar with your own logo.