This storage system is composed of (5) trays. Two of the trays are used to hold the (12) enclosure tiles. One small tray is used to hold the achivement tiles. Another tray holds the bear statues. The largest tray holds both the green area tiles and the animal house tiles. In order for the trays to fit properly it is important to lay the park tiles down in two piles with even number of tiles in each pile (as pictured).