Motorcyclists like to see themselves as rugged individualists, and face cover contribute to that image. However, there are also many practical reasons to wear a face cover on your head while riding a motorcycle. It protects your head from the sun, collects sweat, and makes your helmet more comfortable to wear by lining the inside. When the weather is cold, it helps to insulate your head and keep it warm. If you have long hair, it helps keep it out of your eyes as you ride.