The perfect helmet for the city. E - One is the ideal helmet for those who plan to travel a few kilometers a day by bike to go to school or work in complete safety. Compact, aerodynamic and NTA certified to satisfy all those who use not only the normal bicycles, but also the increasingly widespread e-bikes. E-One is a helmet from the CEREBELLUM line, the Briko products in the continuous search for a technological evolution, which integrates a system of LED stripes inside the shell that allow the cyclist to be visible and recognizable in every situation. 10 VENTILATION HOLES FRONT AND REAR USB RECHARGEABLE LED LIGHT IN-MOLDING TECHNOLOGY - TOP, BACK ROLLFIT WITH VERTICAL ADJUSTMENT AT 3 STEPS INTERIOR WASHABLE AND REMOVABLE WITH MICROARMOR ANTI-BACTERIA TREATMENT FINISHES: - MATT WITH SHINY - MATT SIZES: M (53-58 cm), L (59-63 cm) WEIGHT: from 280 gr CERTIFICATIONS: CE EN 1078, NTA 8776 (safety standard for the use of the E-Bike)