- https://en.wikipedia.org/wiki/Motorcycle_helmet
Motorcycle helmet – Wikipedia
This page provides general information about motorcycle helmets, including their history, design, and safety standards. It briefly mentions flip-up helmets as one of the three main styles of helmets. - https://en.wikipedia.org/wiki/Motorcycle_personal_protective_equipment
Motorcycle personal protective equipment – Wikipedia
This page provides detailed information about motorcycle personal protective equipment, including helmets. It explains that several manufacturers have introduced full-face helmets with a flip-up front, combining the protection of a full-face with the ease of communication and donning or doffing that an open-face gives. - https://en.wikipedia.org/wiki/File:Modular-helmet.jpg
File:Modular-helmet.jpg – Wikipedia
This page shows an image of a modular helmet, which is another name for a flip-up helmet. - https://en.wikipedia.org/wiki/AGV_(helmet_manufacturer)
AGV (helmet manufacturer) – Wikipedia
This page provides information about AGV, an Italian motorcycle helmet manufacturer. It mentions that AGV has introduced a fully-carbon flip front SportModular helmet.
Citations:
[1] https://en.wikipedia.org/wiki/Motorcycle_helmet
[2] https://en.wikipedia.org/wiki/Motorcycle_personal_protective_equipment
[3] https://en.wikipedia.org/wiki/File:Modular-helmet.jpg
[4] https://en.wikipedia.org/wiki/AGV_(helmet_manufacturer)
A motorcycle helmet is a type of helmet used by motorcycle riders. Motorcycle helmets contribute to motorcycle safety by protecting the rider's head in the event of an impact. They reduce the risk of head injury by 69% and the risk of death by 42%. Their use is required by law in many countries. However, only 10.4% of all motorcyclists wear helmets, according to the World Health Organization in 2016.
Motorcycle helmets consist of a polystyrene foam inner shell that absorbs the shock of an impact, and a protective plastic outer layer. Several variations exist, notably helmets that cover the chin area and helmets that do not. Some helmets provide additional conveniences, such as ventilation, face shields, sun visors, ear protection or intercom.