1. Safety Certification: The helmet complies with the safety standards DOT FMVSS218 / ECE 2205, which is for you and your loved ones. It can protect your head in case of an accident! It is a very important safety tool for your outdoor life. 2. Adjustable: This sports protective helmet features an adjustable head circumference knob for securing and sizing, allowing flexible adaptation to different sizes to fit the head shape. 3. Quality Materials: The helmet provides a breathable and comfortable inner lining, conforming to the head for a pleasant fit. Removable and washable, ensuring cleanliness and hygiene. Made from quality EPS cushioning foam and an ABS shell, it is impact and penetrationresistant. 4. Cool Ventilation: Designed according to the helmet's shape and performance requirements, ventilation openings are adjusted to regulate airflow and maintain a cool temperature. You can experience the benefits of this comfortable ventilation during daily rides.