A system comprises a first body, comprising: a backpack suspension; a first storage region; and a first portion of a first attachment mechanism. A second body comprises: a second storage region; and a first portion of a second attachment mechanism. A third body comprises: a third storage region; a second portion of the first attachment mechanism; and a second portion of the second attachment mechanism. In a first configuration, the first portion of the first attachment mechanism is coupled to the first portion of the second attachment mechanism. In a second configuration, the first portion of the first attachment mechanism is coupled to the second portion of the first attachment mechanism, and the first portion of the second attachment mechanism is coupled to the second portion of the second attachment mechanism.