What is your head circumference in cm's?
Speed Pedelec Helmets7
Speed Pedelec bicycle helmets are a little tougher than regular helmets. The reason for that is simple: a speed pedelec or 45 kph e-bike allows you to go considerably faster than a regular bike would. These new helmets offer more protection at the back of the head and temples, and have been specifically designed to be used with Speed Pedelecs and other high-speed bikes such as e-bikes.