In their fine article on Aita, the Etruscan Hades, Dionysia and Sin point out the Etruscans made Aita's cap or helmet from a wolf's head, which would be unknown to the Greeks. Yet the Greeks depicted Hades' headgear in a similar way.

For Hades, too, had a helmet, the proverbial "Aidos kune" or "Hades' helmet," that was created for him by the Cyclops during the war of the Olympian gods against the Titans. This helmet made the wearer invisible ("aidou", hence the name Aides or Hades, "The Invisible" or "Unseen One"). Not even the gods could see its wearer. Athena wore it, says Homer, during the Trojan war to make her invisible, even to Ares. Hermes borrowed it and lent it to Perseus, to make him invisible in his fight with the terrible Gorgons.

The Greek word for "helmet" (kune) means "dog's hair," "dog's hide," or "dog's skin." "Hades' helmet" was thus a dog-skin cap. And this the Etruscans turned into the wolf-skin cap or helmet of Aita.