OPTIMAL MATERIAL : Thanks to a hard PC shell outside and multi-density EPS foam inside, bicycle helmets effectively absorb the impact energy of the rider's head with little or no injury.

BUILT-IN LED TAILLIGHT : The urban bike helmet includes 3 flashing modes: normal, slow, and fast flashing. Can keep visible and safe in the darkness.

EFFECTIVE VENTILATION : 9 large air tunnel vents: 4 air inlets to usher in cool air and push hot air from the 5 air outlets for full-head ventilation.

SUN VISOR : With a streamlined and integrated visor design, the bike helmet can protect eyes from sunlight and rain and is suitable for urban commuter riding, around-town road cycling, skateboarding, scooter, or electric bike.

ADJUSTABLE DIAL SYSTEM : Equipped with a dial adjustment device ensures a comfortable fit and it's easy to rotate with one hand. Recommend the head circumference: 22.8-24.4in. Please measure the head circumference correctly before buying.

Special Features : Ventilation, Adjustable Strap, Visor

Specifications : Streamlined structure and large air vents lead airflow to accelerate cooling on hot summer rides. These air vents and track can lead the airflow throughout the helmet to accelerate cooling.

Age Range (Description) : Adult

Material : PC-shell + EPS-foam

Item Dimensions LxWxH : 10 X 7.99 X 4.01 Inches; 9.52 Ounces.