Patent attributes
A backpack system is provided including an external frame, and a separate pack bag. The external frame may include at least one adjustable pole member, wherein the at least one adjustable pole member has a height that is adjustable between a daypack position and an extended position, wherein the extended position is higher than the daypack position. The pack bag can have an adjustable height so that it can be configured complementary to the height of the adjustable pole members. The backpack system may include 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.