The principle of helmet protection for the head is that the person wearing the helmet can stop the hit head relatively slowly. If the person without a helmet hits his head on the ground, it will often cause edema in the brain and cause bleeding. , but the polymerized balls in the helmet can absorb the impact force and avoid these unfortunate incidents.

Key points for choosing a helmet: Put the rim of the helmet on your forehead between the eyebrows. The helmet will not spin around your head, rock back and forth, or feel clamped, but will feel relaxed and natural. To protect the head, the breathability performance cannot be ignored. The more pores, the better the breathability. However, this is not a rule under the premise of ensuring safety, because although some helmets do not have many air holes, they have poor breathability. The same can be achieved in design.

Extended information:

Notes for users riding motorcycles:

1. Do not place the helmet on the rearview mirror after stopping the motorcycle. Because the angle of the rearview mirror will deform the helmet lining material and cause this part to lose its buffering effect, if it really needs to be placed on the car, it is best to hang it on the handlebar and the end of the grip.

2. When driving, be sure to wear a helmet on your head.

3. Some motorcycles are equipped with helmet hooks, which are used when parking. Hanging a helmet while driving will be unstable and cause damage to the helmet.

4. When someone goes out, they take off their helmet after parking and use it as a stool to sit on. This is not only unethical, but also has a negative impact on the helmet.

Baidu Encyclopedia-Motorcycle Helmet