Most backpacks have an adjustable Sternum Strap Adjuster carrying system to adapt to different torso lengths, especially large-capacity backpacks.

First adjust the length of the Sternum Strap Adjuster carrying system to fit the length of your torso, usually through rails, velcro or loop system, please adjust according to the instructions. If problems are found in the follow-up process, return to this step to check.

Start the adjustment from the waistband adjuster and adjust the backpack from the hips upwards. First, place the middle part of the waistband (between the upper and lower edges) on the iliac crest. Then tighten it and make sure it is tight enough. After tightening, the buckle of the belt should be in the middle. This will establish a good foundation for you to carry.

Your hips are where your center of gravity is when you carry it, and the strength of your lower limbs is sufficient. Learn to make the most of your strengths. Follow the 80/20 principle: 80% of the weight should be placed on the hips and 20% on the shoulders.

Adjust your Sternum Strap Adjuster. Next, you need to fine-tune the Sternum Strap Adjuster to make it fit better. First relax the shoulder strap, then gently pull the end of the shoulder strap forward, and then backward and downward for a more natural fit. Be careful not to stretch too tightly and not to load your shoulders too much.

If the Sternum Strap Adjuster is adjusted correctly, the shoulder strap should fit your shoulder completely, and there is no gap between the shoulder strap and your back. If there is a gap, it is likely that your carrying system settings are too long. Shorten the Sternum Strap Adjuster carrying system and try again.

Adjust the weight belt and Sternum Strap Adjuster

The last two adjustments on the backpack are the weight belt and the Sternum Strap Adjuster. First, pull down the weight belt to adjust until the weight belt is at a 45-degree angle. If you pull too tightly, the top of the shoulder strap will leave the shoulder.

Next, adjust the Sternum Strap Adjuster along the rails until the chest strap is 3 cm below the collarbone. Then buckle the Sternum Strap Adjuster, gently grasp the end of the chest strap, and gently tighten it until it naturally slides from your fingers. Tight chest straps can cause the backpack to not fit properly, and in extreme cases can even hinder breathing. If the chest strap is pulled too tightly, you will see the outer edge of the shoulder strap lift up.