Dual Sternum Strap Adjuster is often seen in daily life, so do you know how to install the schoolbag strap adjuster? The following will simply take you to understand it.
installation method:

1. First of all, you can see that the backpack belt button is a small object with the same Japanese characters, and there are two compartments on the top and bottom. The manufacturer of the Dual Sternum Strap Adjuster tells you that you can use it (Japanese buckle) to adjust the length of the backpack.
2. When wearing, first put the strap of the backpack flat through the lower grid of the Japanese buckle, and then stand up on the side of the Japanese buckle.
3. Pick up the strap of the backpack and pass it through the upper grid of the Japanese buckle.
4. After wearing it, in order to make the strap of the backpack more stable, pass the strap of the backpack through the lower grid of the Japanese buckle.
5. The manufacturer of the Dual Sternum Strap Adjuster tells you to put the strap through the upper slot of the Japanese buckle, and you are done.
6. Let's try wearing the backpack and adjust the length. The manufacturer of Dual Sternum Strap Adjuster tells you that if you are not afraid of trouble, you can sew it with a needle and thread. After the sewing is firm, the strap will not slip away.