1. The inner side of the helmet must be equipped with an anti impact pad. The surface pad material that matches the head is thin mesh lining, which should have the function of absorbing sweat and oil from the head. In addition, the pad shall be provided with a ventilation slot with a depth of more than 10MM to allow air circulation in the helmet.

2. The jaw strap shall be soft, and the snap fastener and other hard protrusions shall not exceed the external surface by 5mm.

3. The helmet should be light and comfortable, and its weight should not exceed 2KG.

4. The helmet shall not be blocked or suffocated, and the vision shall be wide and clear without shielding. The visual angle shall not be less than 105 degrees when stationary.

5. The sound from all directions can be clearly heard and distinguished when wearing the helmet, and there should be no vibration and other noises during driving.

6. The helmet shall be equipped with good ventilation and heat preservation devices inside, and shall be dust-proof, insect proof and waterproof.

7. Helmets should have good reflectivity and thermal radiation resistance, and highlight obvious eye-catching colors.

8. The lens of helmet goggles is clear and colorless, and its toughness is not easy to break, so as to ensure that the driver's vision is not affected.

9. The helmet shall be made of glass fiber laminated structure.