2. Cross the shoulder straps, and then put the right shoulder strap on the left shoulder strap.
3. Tear the glue line, then put the shoulder strap into the glue line and fix it firmly.
4. Back, as shown in the figure.
5. Adjust to the most comfortable state.
6. Tear open the sticky mouth of the abdomen.
7. flatten the whole back and stick it on.
8. Pull the two ends of the shoulder straps on both sides to the abdomen, adjust the tension properly and then bond them.
9. done.