Cách sử dụng
A helmet is a type of protective gear that you wear on your head. It is mostly used in sports like cycling, motorcycling, and horse riding to protect the head from injuries. It is also used by construction workers and firefighters for the same reason. When you wear a helmet, it can absorb the shock of an impact and help prevent serious injuries to your head. It is important to always wear a helmet when participating in any activity that involves potential head injuries.