1. When choosing a helmet, both safety and balance should be taken into consideration. The closer the center of gravity of the helmet is to the head, the more comfortable it will be. When the helmet is strongly impacted, the soft foam spacer inside the helmet can avoid hurting the head.

2. When wearing a helmet, the helmet should be parallel to the head. The edge of the helmet should be about 1cm above the eyebrows, and the width of about two fingers should be left at the harness below the head. After wearing the helmet, it should not shake from left to right.

3. When wearing a helmet, choose a safety helmet, not a helmet; In addition, be sure to wear the helmet properly, buckle the buckle, and do not wear the helmet for traffic police inspection.