World War I
Pilots had to wear certain clothes when flying an airplane in World War I because they flew high, where the air is cold. The pilots' clothes kept them warm and protected them from the wind and cold. Pilots wore a leather coat to protect their bodies, a padded helmet and goggles, which are large glasses with special lenses, to protect their head and face. They wore a scarf around their neck to keep the wind from blowing against their neck when they turned their head.