Electric vehicle helmet It is an essential equipment for electric bicycle riders. It seems that they are all the same size when buying. Some manufacturers even produce one size fits all. In fact, everyone's head circumference is different. When shopping, I also pay attention to what is suitable for me. How should I measure the head circumference of the helmet?

Electric bikes have different types of helmets. On the one hand, because the standards of different manufacturers are different, most of the sizes are different. In order to choose a helmet that fits you, you must try it on when you buy it. As a manufacturer, the head circumference of the helmet needs to be measured to determine the specific size, so as to meet the market demand. When measuring, you can use a tape to make a circle to determine the size. Determine the size according to the head circumference of the hat. Of course, consider the cotton material inside the helmet.

These spaces need to be measured. The dimensions are different in summer and winter, and the details need to be measured.