Visible armor slots is a mod that is responsible for keeping the boxes of our character’s armor pieces always visible, adding a box with the boxes to the left of any other Minecraft inventory.

For example, when opening the inventory we will have the boxes visible, when opening the crafting table, the enchantment table, a chest, an anvil or a tag, we’ll still have the armor boxes visible. This will allow us to interact with them, without having to open and close the inventory every time we need to use one of the pieces of our armor.