All permissions:

ubackpack.bypass.*

ubackpack.bypass.world - Bypass world use.

ubackpack.bypass.region - Bypass region use.

ubackpack.craft.* - Craft all backpacks

ubackpack.craft.use - To use the craft button.

ubackpack.craft.iron - default backpack

ubackpack.craft.gold - default backpack

ubackpack.craft.redstone - default backpack

ubackpack.craft.diamond - default backpack

ubackpack.craft.emerald - default backpack

ubackpack.virtual.*

ubackpack.use.virtual - To use virtual backpacks and button.

ubackpack.virtual.one - default sizes

ubackpack.virtual.two - default sizes

ubackpack.virtual.three - default sizes

ubackpack.upgrade_virtual.*

ubackpack.upgrade_physical.*