This is a custom Storage Box for Splendor base game and also the Cities of Splendor expansions. All four expansions fit in the box.
Instructions for the game
...Plus and expansion will need to be shrunk down to fit, but there is room at the top of the box for 4 sheets of 20lb paper folded in half.
The lid fits pretty snuggly, so at least on my printing, friction holds everything together quite well.
Hope you enjoy it and please leave me some feedback as it's my first 3d design :-)
