Backpack strap accessory devices, systems, and methods

A device comprising:

• a backpack accessory;
• one or more attachment appendages coupled with the backpack accessory, wherein the one or more attachment appendages are configured to couple the backpack accessory with a backpack shoulder strap such that a first attachment appendage from the one or more attachment appendages wraps around a posterior portion of the backpack shoulder strap from a first lateral side of the backpack shoulder strap and a second attachment appendage from the one or more attachment appendages wraps around the posterior portion of the backpack shoulder strap from a second lateral side of the backpack shoulder strap such that the first attachment appendage couples with the second attachment appendage to form a first aperture and a second aperture configured such that the backpack shoulder strap passes through the first aperture and the second aperture;
• and
• a third aperture formed between a portion of the first attachment appendage and the backpack accessory, wherein the third aperture is configured such that a sternum strap coupled with the backpack shoulder strap passes through the third aperture;
• one or more rigid members coupled with the posterior portion of the backpack accessory such that at least one of the one or more rigid members hinder a motion of the backpack accessory in at least a longitudinal direction along a length of the backpack shoulder strap with respect to a hardware coupled with the backpack shoulder strap, wherein the one or more rigid members include a first rigid member and a second rigid member such that the first rigid member and the second rigid member extend laterally across the posterior portion of the backpack accessory such that the hardware coupled with the backpack shoulder strap is confined between the first rigid member and the second rigid member such that the motion of the backpack accessory is hindered along the longitudinal direction along the length of the backpack shoulder strap with respect to the hardware coupled with the backpack shoulder strap.