Abstract: A backpack which includes a suspension and a frame. The frame includes an inner support structure and an outer support structure releasably connected to each other by quick release pins. The backpack frame can house storage bags and compartments and is adjustably connected to the suspension system by quick release pins. By separating the two support structures, aligning them linearly to each other, and inserting elongated rods between them, a frame for a cot is formed. The orientation of the support structures is such that when a mattress is placed on the frame and weight is put on the mattress, the forces are directed inwardly, resulting in great stability. The suspension can be used as a day pack, i.e. the frame can be eliminated and one of the storage bags can be adjustably attached to the suspension.