Containers
From Rise of Agon Wiki
Containers can be used put items in. This is handy for sorting a vault, moving between vaults and backpack or for trading.
Containers can be nested, but only to a certain depth.
Sacks and bags can be crafted. They come in 4 colors.
In the RoA store you can buy special containers also.
Naming a container
Hold left-click on a container until a context menu with rename pops up.