The Bags Mod (1.12.2, 1.10.2) adds in-game craftable backpacks that significantly enhance inventory control. Backbacks can be worn by inserting one into the chest armor slot or kept in your inventory. The backpack mod adds 16 new backpacks of various colors to Minecraft, which can be carried about as inventory chests. Without going to chests, carry inventory in the bags.
Don't worry if the backpack becomes overflowing with supplies; Backpack Restorer will help you recover it. Finding, choosing, and clicking Accept will cause Bag Restorer to transform into the missing backpack with all of the materials inside. Backpack Restorer has every type of backpack you've ever constructed. You won't need to misplace the bag very frequently, though, because the materials used to make them are quite uncommon.
Additionally, numerous Quantum Backpacks can be connected to the biggest backpack by putting it in the Quantum Chest. Large backpacks are now visible from anywhere in the Minecraft world without the need for an expensive Backpack Restorer to save resources and objects.
How to use:
Simple hold a backpack in your hand an right click to open it.
You can put any backpack in your personal backpack slot. Per default press sneak and B to open the GUI.
A backpack equipped in your personal slot can be opened by pressing the ‘B’ key. You can change the key in your controls.
If you want to rename it sneak and right click. You can enter a new name then.