The suitability of helmet can be worn on any head type. However, attention should be paid to the ventilation and size of the helmet. When riding with helmets, you should not feel that the helmets tighten your neck and wrap your head tightly, causing poor breathing. At the same time, the size of the helmet should try to choose the appropriate safety helmet that will not move and will not wear the protective sleeve at the bottom of the helmet when it is frequently removed and put on.