What is the primary function of a face shield?

The primary function of a face shield is to shield the face from impact and wind. This is crucial for motorcycle riders, as they are exposed to various elements while riding. A face shield provides important protection against debris, insects, and wind, which can impair vision and distract the rider. Additionally, in the event of a fall or accident, a face shield can help protect the rider's face from injury by absorbing some of the impact.

While options like protecting against poor visibility or reducing glare can be beneficial, they are secondary functions compared to the fundamental role of safeguarding the face. Enhancing style, while it may appeal to some, does not contribute to safety, which is the primary concern when it comes to motorcycle gear. Thus, the main function of a face shield is its protective capability.