Backpacks are portable storage items that keep their own contents on the item itself. Unlike the Ender Backpack, normal backpacks do not open vanilla Ender Chest storage.

• Small Backpack: 9 slots
• Backpack: 18 slots
• Large Backpack: 27 slots
• Woven Backpack: 36 slots
• Gilded Backpack: 45 slots
• Radiant Backpack: 54 slots

Right-click a backpack while holding a single copy of it to open its storage. The first time a blank backpack is opened, that specific item gets its own personal inventory, so two backpacks of the same tier do not share contents.

• Backpacks cannot store other backpacks.
• Shulker boxes and bundles are not allowed inside backpacks.
• Most normal items can be stored just fine.
• The Cooler is a special exception and only accepts Juices.

• Stacked backpacks cannot be opened.
• Moving around after opening a backpack will close it.
• Entering combat also closes any open backpack.

• Soulbound Backpack - 36 slots and keeps the backpack with you on death.
• Cooler - 27-slot drink storage that auto-consumes juice when you get hungry.
• Restored Backpack - a recovery-only backpack created through /sf backpack to help retrieve lost contents.

If you want portable access to your Ender Chest instead of private backpack storage, use an Ender Backpack.