Extended Backpacks
Carry multiple backpacks by placing them in your attire slots. Each backpack takes the place of a clothing item, so using more backpacks means giving up more armor or clothing.
Swap the backpack you want to access into your active backpack slot. Only the backpack equipped in this slot can be opened with /backpack or the backpack.open key bind.
With normal clothing, backpacks can provide up to 224 additional inventory slots, or 196 while wearing a Hazmat Suit.
Example key bind: bind b backpack.open