It is used to adorn the backpack and add some elements to the backpack, and it is purely used as a pendant.
A carabiner can be used to hang a water bottle, and mountaineering can free up the hand for water.
For photography enthusiasts, two external straps can also be used to hang the camera to free your hands.
It can also be used to hang a small bag when traveling, traveling, studying, etc., so that it is convenient to bring more things.
In addition to hanging small bags, it is most commonly used to hang keys and other trivial small objects.