Pure geometry. Stacking boxes in several sizes that you can nicely align with each other on a table, shelf or drawer. The box with the holder has a precise place where you slide the lid to keep the box open. The lid with the flag is not only easy to open, but you can also write on it what is hidden inside. And you can also variably print transparent lids using the infill settings. 26 models of square and cubic boxes for smart storage of everything you need.