Common helmet knowledge points
The helmet dates back to ancient times when primitive people used fibrous materials such as coconut shells, armadillo shells, and large turtle shells to protect their heads from predation and struggle. Later, with the development of metallurgical technology and the need of war, it was only after the helmet. Since its development, the structure and style of the helmet have undergone various changes to meet the requirements of various activities.At present, the helmet is mainly composed of a helmet shell, a lining and a suspension system.
As an important tool for protecting the head, the helmet is often used in military training, combat, transportation, aerial work, etc. In order for the hat to protect the head, you must wear a chin strap under the helmet to ensure the stability of the helmet. Avoid easy disengagement of the helmet.
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