How to Fit a Backpack, Step by Step

Start with your torso length, measured from the bone at the base of your neck to the top of your hip bones. That decides the pack size, not your height.

Load the pack with real weight, then buckle the hip belt so it sits on top of your hip bones. About 80 percent of the weight should ride there.

Snug the shoulder straps so they wrap your shoulders without lifting off them, then pull the load lifters to a gentle angle.

Finish with the sternum strap at about armpit height, just tight enough to keep the straps in place.