Just a few days ago, I saw a video about the box, but I can't find a good file to print, so I built it according to the short video,maximum fit 12 condoms,I really hope anybody likes it！ Printing part: The 'Total'file canbe used to print with normal size printer like ender3 series,you can also print each file one by one. Materials part: Just need two (#4024) size rubber bands.