The Backpack Expander is a tool item that appears as a backpack held together with four straps that has a Description Tag, Heavy Duty Rag, two Mann Co. Supply Crate Keys, and three Huntsman arrows protruding from it, along with a Sandman strapped on top. When used it will grant 100 extra slots, or two full pages, to the user's in-game backpack. Multiple Backpack Expanders can be used by the same player to obtain a maximum of 3000 slots (60 pages). This means all players can use up to 27 Backpack Expanders, leaving Free-to-Play players at a total of 2750 slots. The remaining 250 slots can be obtained by upgrading to Premium.