ModsJava
Upgradable Backpack
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
I made the backpack, which is
- Dyeable through the crafting table.
- Easily renamable using an anvil.
- Wearable in your chest slot.
- Upgradable to get more slots (9 -> 18 -> 26 slots)
Demo Video
How to Use Backpacks
- To store or retrieve items, simply drop the backpack on the ground. It will transform into a barrel, allowing you to manage your items. Click the "Exit" button slot to revert it to a backpack item.
Crafting Recipes
Craft a Small Backpack:
(4 wools, 4 leathers, and a barrel)
Craft a Backpack Upgrader:
Upgrading to a 26-Slot Backpack:
Place the upgrader into your backpack block.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.9, 1.21.10
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as upgradable-backpack-11.3.jar — drop this file into the mods folder
- Download size: 148 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.