A crash helmet, also known as a motorcycle helmet or a riding helmet, is a protective headgear worn by individuals who ride motorcycles, bicycles, and other similar vehicles. It is designed to protect the head from injuries that may occur due to impacts and collisions. Crash helmets consist of a hard outer shell made of plastic, fiberglass, or Kevlar, with a cushioning layer on the inside to absorb impacts. They are typically secured to the head with a chinstrap and come in various shapes and sizes to fit different head sizes and shapes. Some helmets also feature a visor or face shield to protect the rider's face from wind, dust, and debris. It is important to wear a properly fitted and certified helmet when riding a vehicle to reduce the risk of head injuries in the event of an accident.

What is a "crash helmet"?

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“crash helmet”的英语定义和含义

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