Medium size professional quality classic helmet for action sports; fits head 22.0-22.8 inches (56-58cm) High-density, injection-molded PE shell and inner 2-stage foam liner protect against low ...

Sport helmets (and all Arai models) don’t come with drop down sun visors since most rider will simply swap to dark visors between sessions. If you tour or regularly ride in mixed conditions ...

But like they say, it’s the rider, not the ride. Whatever you ride, if you need to stay comfortable all day while knifing through highway winds, a Sports Touring motorcycle helmet is for you.

This includes the need for high-vacuum and high-temperature deposition processes, along with photolithographic patterning. Presently, accelerometers are being used in football and other sports helmets ...

Similar to the principle of crumple zones on a car, the idea is for the inner layer of the helmet to contract and absorb energy, so less force goes to a rider’s head during a collision.