This mod adds 5 items.

• A small backpack, that has 9 slots.
• A medium backpack, that has 18 slots.
• A large backpack, that has 27 slots.
• A ender backpack, a backpack that lets you access your ender chest from anywhere!
• A global backpack, a universal inventory that is only connected with anyone that has this item!

It also adds an enchantment!

• Capacity, an enchantment that increases your backpack's storage by 9 additional slots per level! (Note: Can be applied on medium and large backpack only).

Also, Regular backpacks are dyeable like bundles!

1.3 or above

• Backpacks are like bundles. You can use the item form of a backpack to input item into it like a bundle. Backpacks only allows inputting item not outputting.
• Backpacks. backpacks. You can right click a backpack in a inventory to open it.
• Placeable backpacks.

Note: This below requires you have the Trinkets (Polymer Port) mod!

• You can put backpacks on a trinkets back slot. To open the backpack do /open.

Write /polymer generate command. Resource pack will be located in your server folder as polymer-resourcepack.zip or you can enable auto-host in polymer's config.

Backpack items are fully textured for bedrock whereas backpack blocks are kinda wonky and only supports one texture of a backpack and that is Large Backpack. You also can't rotate them. This might change in the future though.