Special aerodynamic design Bike helmet

Effectively reduces air resistance and reduces sweating
Ventilation: The aerodynamic ventilation design includes 25 vents to allow airflow through the helmet for an optimal temperature regulation
The 330g bike helmet will not cause any burden to the rider's head during cycling
High Quality Design: Rotatable and adjustable dial (3D) fits every head comfortably and does not feel loose

The Removable padding make it easy to detach and wash
Double Shell Progressive Layering: The process of engineering a helmet liner with Double Layers EPS foam densities to better manage the transfer of energy
PC external shell and EPS high density foam for durability and resistance
Double side warning lights, tail warning lights, and lighting headlights to protect your safety

2000mah rechargeable battery, long working hours
Led safety light - 3 lighting modes: steady, slow flashing and fast flashing. Improve your visibility during day or night cycling
Bright: about 4 hours; Low: about 9 hours; Flash: about 24 hours; Only side & rear warning light: about 1 month
Head circumference 57-62 cm
Elegant finish: High range paint with a very modern matte finish

Specifications:
330g
2000mah rechargeable battery
Material: PC + EPS
Head circumference 57-62 cm
Power: USB charging