Sternum Strap Adjuster can be seen everywhere on bags and has three main functions:
One is functionality: the Sternum Strap Adjuster can be opened and closed quickly, making it more convenient and quick to use;

The second is safety: Sternum Strap Adjuster has high durability;
The third is aesthetics: The various designs of the Sternum Strap Adjuster can make the bag more fashionable and beautiful.
To avoid these damages, the Sternum Strap Adjuster should meet the following conditions as far as possible:
1. The positioning parts of the Sternum Strap Adjuster should match the fasteners. If the positioning parts are too small, the positioning parts will be severely worn or even cracked or the fasteners will be broken; if the positioning parts are too large, the plastic inserts will not be able to lock the fasteners normally. 
2. The Sternum Strap Adjuster should be made of ductile material, which is too brittle and easy to break the fastener.