Usually the masks were made of linen, wood, or leather. A marble or stone face was used as a mould for the mask. Human or animal hair was also used. The eyes were fully drawn but in the place of the pupil of the eye was a small hole so that the actor could see.
Some people claim that the masks had one more significance they added resonance to the voice of an actor so that everyone in the huge ancient theatre could hear him.
The members of the chorus wore masks, usually similar to each other but completely different from the leading actors.