one Electric vehicle helmet The density of foam buffer material should be high, and it is unqualified if it is easy to dig holes with fingers.

2. International brand helmets generally have certification materials such as DOT and ECE.

3. The liner shall be lined with liner, mesh, ventilation slot and air duct to achieve the effect of sweat absorption and ventilation.

4. Light weight, preferably no more than 4 kg.

5. When wearing the helmet, the vision is not blocked, the direction and position of the surrounding sound can be clearly heard, and there is no other vibration sound.

6. The lens is clear without color difference, and the outer layer of the helmet is bright and eye-catching.

In a word, it should be a clear, ventilated and well ventilated equipment with a wide field of vision and no obstacles and color difference. Once the helmet is damaged or impacted, even if there is no damage or only scratches on the outside, do not continue to use it; Because the helmet is formed in one piece, the stability of the internal structure of the helmet has become worse after collision, so the real effect of the helmet is that continuous use cannot achieve protection and safety.