The Voyages Of Marco Polo Insert: - Rules of Play says:
This insert is designed to be compatible with The Voyages of Marco Polo®. The insert has space for both the “The New Characters” mini expansion® and “The Agents of Venice”® expansion. The design provides both efficient storage and improved game play. Many of the trays can be utilised during the game, and they greatly aid set-up and clear-away times. The boards and player boards act as a lid on top of the trays.