This option will add one set of load lifters on to your pack. Load lifters provide a bit of adjustability to a packs torso size, and they also give you the ability to tweak your pack a bit more to find the most comfortable carry. 
 
5/8" hardware and webbing adds about .5oz to overall pack weight.
 
Selecting Qty 1 will get you one set of load lifters for one backpack.
 
Note that these come stock on all of our Long Haul packs.