Patent attributes
A backpack system is provided including an external frame, a pack bag and a sling configured for extending between the frame and pack bag providing a space between the frame and pack bag for accommodating heavy or bulky cargo therebetween. The sling can be extended or retracted in order to selectively adjust the distance between the pack bag and frame. The backpack system may also include a pouch for supporting a lower end of relatively long object therein, which may be carried in the space between the pack bag and frame. In one embodiment, the pack bag is equipped with stiffening members for supporting the pack bag when not mounted directly to the frame.