1. Detachable brim can block sunlight. 2. Removable inner lining, with insect net, cushioning protection, sweat absorption and quick drying. 3. High-density EPS material is used, with strong impact resistance. 4. Aerodynamic design, multiple large apertures and air guides, reduce wind resistance, enhance air flow, and dissipate heat. 5. There are three lighting modes for the helmet taillights, which can be easily switched with one button and have a long battery life. Notes: 1. The helmet should not come into contact with corrosive solvents. 2. After using the helmet, the lining of the helmet must be removed for cleaning or drying. 3. When cleaning, do not iron, do not dry clean, and dry in a cool and dry place. 4. After using the helmet, gently wipe the helmet with a soft cloth, then put it in a plastic bag and put it in a color box. 5. Do not sit on the helmet or hit the helmet with a hard object. 6. The helmet cannot be used again after an impact during normal use