backpack-1.0.0-neoforge-1.21.1.jar is a release file of the Minecraft mod Just Some Backpack(JSB) for NeoForge, made for Minecraft 1.21.1. It was published on September 20, 2026 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Just Some Backpack(JSB) mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
