I think it was just kaiser wilhelm...
all motorcyclists wear helmets, squids don't wear helmets.
Sikhs do not have to wear crash helmets as part of there religion.
Not all builders wear yellow helmets, but builders generally wear brightly colored helmets...brightly colored to maximize their visibility at the work site, and helmets to protect their heads from injury.
Mostly vert pro skaters wear the helmets.
Players wear helmets when playing American soccer.
Different helmets
spacemen wear helmets because , there is no oxygen in space. They have to carry an oxygen cylinder on their backs.
Military police officers wear military uniforms.Added: Displayed on the military uniforms of their particular branch of service are badges, similar to civilian police badges, and/or they wear armbands or, sometimes, distinctive hats or helmets, and/or white pistol belts, so that they stand out from the usual military uniform. And, unlike other member of the military outside of a war zone, they are always armed with a sidearm
Skateboarders don't usually wear helmets unless skating a vert ramp
Yes, It is important to wear a helmets in your rides. Helmets can protects you from any accident.
Not all gas masks are compatible with helmets, so some soldiers forgo helmets to wear their masks.
NFL players were first required to wear helmets in 1943. At the time, they were made of leather. They then went to being made of plastic and now are made of polycarbonate.