It's printed in halves like two halves of an avocado. After printing, I cut out the inner walls and removed all the inner supports, so the final product is hollow and functions as a bottle. In our 5e game, I fill it with various colored glass beads. Players can try the bottle once per day, and the color of the bead that comes out creates an effect (healing/poison, etc). It essentially becomes an interesting gamble. Wonderful model from AVG.