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A collection of full-face motorcycle helmets worn by Moto GP racer Valentino Rossi. 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%.
Most notably, the company is remembered for its World War II military helmets and helmet liners used by soldiers in the United States Army, Marines, and Navy. Hawley Products is the original designer of the M1 steel helmet liner. [3] The company is also one of the two original manufacturers of the M1 steel helmet liner, alongside General Fibre ...
The EPS liner is designed to deal with main impact forces while the MIPS helps prevent brain injuries such as concussions by reducing rotational forces. [13] Their Bell Star helmet was listed as the safest full-face road helmet after being tested by Australia's independent Consumer Rating and Assessment of Safety Helmets team.
The first liner was an eight-finger leather liner, similar to those of the German M35 to M42 Stahlhelm designs. [citation needed] Next came a short production of an eight-finger liner made of Gralex. [citation needed] The final version of the SSh-39 liner was cloth, similar to the SSh-36 liner.
Shoei was one of the first helmet manufacturers to introduce lightweight carbon-fibre helmets in the mid-1970s. Shoei's GRV helmet was the first helmet to use carbon fiber and Kevlar. Shoei also created the first coverless shield system and the Dual Liner Ventilation system.
In many countries the wearing of motorcycle helmets is mandatory. Helmets are made in two main layers: hard and energy-absorbing. The hard shell spreads an impact over a larger area, while deformation of the liner (often polystyrene foam) absorbs energy so less is transferred to the skull and brain. [14]