Abstract: An articulated backpack apparatus for transporting material while attached to a user in which an upper storage element of the apparatus is capable of pivotal movement in relationship to a lower storage element of the apparatus while attached to the user. The backpack apparatus is capable of being collapsed into a satchel orientation so that the backpack apparatus may be carried by hand. From the satchel orientation the upper storage element and lower storage element may be moved apart by a pair of extensible supports so that the backpack apparatus may be secured over the wheel of bicycle in a pannier orientation. Additionally, the backpack apparatus is provided with a pull handle, an extensible shaft, and wheels, so that the backpack apparatus may be rolled along the ground in a pull cart orientation.