This storage system is composed of six removable trays. Five of them each hold the individual player pieces used to distribute to players at the beginnning of the game. The last tray holds the various other bits used. A small space is reserved to hold the cards - sleeved. This insert is designed to fit with both the Britannia and East expansions (it does this by only storing the instruction booklet in the language of choice). If one does not own the expansions the insert will still work however you should not store the game vertically - and you will have room for the expansions.