In terms of area, the carrying system is a small part of the overall backpack that can perform other auxiliary functions. Due to the important position of the carrying system in the overall backpack and the user's application, the OEM /ODM backpack manufacturer basically will not arrange the carrying function of large equipment on it. Generally, each buckle part is only arranged on the waist belt and the shoulder belt position in the carrying system to expand other uses.

Several common extended uses on the belts of backpack custom manufacturers:

1. The pocket on the waist belt of the backpack can store small items such as mobile phones and cameras;

2.  the rope on the backpack belt for carrying technical equipment (generally covered with wear-resistant materials)

Several common extended uses on the shoulder straps of backpack custom manufacturers:

1. A dual-purpose chest that can be used as a whistle;

2.  the bayonet on the shoulder strap is used to fix the water pipe of the water bag. Personally, I feel that this is the embodiment of examining the details of a backpack. Since the water pipe will keep moving with the shoulder strap during outdoor activities, if the buckle is fixed, it is easy to cause the water pipe to come out. Therefore, careful manufacturers will make this point into a live buckle (the cost and workmanship are quite different from the fixed type), so that it can always maintain its fixed position without affecting the use of the water pipe.

3. During long-distance hiking, the bowl belt on the shoulder strap is used to relieve fatigue;

4.  buckles for hanging various items on the two shoulder straps.