1. The shell shall be made of hard, durable materials that can absorb more impact energy; The buffer layer shall be made of non-toxic and harmless materials that can absorb more collision energy and cover the head protection area; The pad is made of sweat absorbing, breathable and other materials; Wear the device to ensure that the helmet is firmly in contact with the head; The goggles are made of materials that meet the light transmission performance and impact force, and the light transmission rate is not less than 85%.

2. The weight of helmet shall be no more than 1.6kg for full helmet and 1.3kg for half helmet. Its left and right horizontal field of vision is not less than 105 °, and its upper field of vision is not less than 7 °.

3. The helmet must have fixed signs. The mark shall include the following contents: product name, manufacturer name and address, trademark, product type, product model, specification, production date, product batch number or serial number.

4. The helmet must be selected according to the head circumference, large (580mm-600mm), medium (560mm-580mm).

5. The helmet should not be used after a major collision accident.