Bag, also known as backpack, is an clothing item used to give extra inventory space for players. It is one of the most common clothing items obtained by players, as this does not take any inventory space, and is wearable with other types of clothing. It is automatically used when crafted.
The bag was released on the Look Cool update, along with helmets, paper, and the IKEA Manual. Currently, wearing the backpack gives the player six inventory slots, allowing for fifteen inventory spaces in total.
The bag becomes a necessity in late game, as players have to obtain different resources for advanced recipes.