Backpacks!

Shaders: Photon Shader

Shaders: Complementary Shaders - Reimagined

Shaders: BSL Shaders

Shaders: Super Duper Vanilla

Shaders: Super Duper Vanilla

Shaders: Complementary Shaders - Reimagined

Shaders: Complementary Shaders - Reimagined

Shaders: BSL Shaders

The Small Backpack has 3 total slots and the Ender Backpack is linked to your actual Ender Chest.

Each one has 9, 18 and 40 slots respectively.

(Ender Backpacks doesn't support dyes)

Use this as a guide if you decide to use one of the custom models for your custom backpack