The Polisport City'go helmet is one of the most versatile helmets on the market. This helmet is specially designed for cyclists who share the road with cars, and cyclist safety is paramount. The helmet is equipped with an LED agent light that can easily be fixed in the rear opening. The cyclist can easily select the desired mode, constant or flashing. The rear light can also be quickly removed to add more air ventilation. What's more, the helmet features an adjustable chin strap for optimum wearing comfort. The City'go helmet can be used both with and without visor. Size: M (54 to 59 cm), L (58 to 61 cm) Weight: M (325G), L (345G) Standard: meets EN 1078 standard for bicycle helmets, skates and skateboards. Not suitable for motorsports. Other features: Integrated LED light with two modes Ventilation openings: 17 matte finish The Polisport City'go helmet is a beautiful bike helmet that is extremely suitable for electric bikes. The helmet offers a good fit and has an integrated LED light at the back for extra safety.