Patent ID: 8783537

Claim:
A backpack having a top, a bottom, and a back-facing side comprising: at least one cargo compartment; a first strap and a second strap that are each connected near said top of said backpack and near said bottom of said backpack; said first and second straps sized to fit over human shoulders so as to support said backpack; a first plurality of beads arranged in a generally linear configuration within a first channel along said back-facing side and extending between said top and bottom of said backpack; and a second plurality of beads arranged in a generally linear configuration within a second channel along said back-facing side and extending between said top and bottom of said backpack; and, a plurality of links connected to said first plurality of beads and said second plurality of beads; said plurality of links moving said first plurality of beads and said second plurality of beads towards and away from said top of said backpack, within said first and second channels.