Box Insert: Stone Age & ExpansionsInsert compatible with Stone Age, including Stone Age: The Expansion and The Mammoth Herd. 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 insert is arranged in up to three layers. This product consists of a flat pack of 5 Evacore sheets. The trays require assembly, which is quick and fun, using ordinary PVA glue. Detailed