Kausia

The kausia (καυσία) was an ancient Macedonian flat hat. It was worn during the Hellenistic period but perhaps even before the time of Alexander the Great and was later used as a protection against the sun by the poorer classes in Rome. Depictions of the kausia can be found on a variety of coins and statues found from the Mediterranean to the...
Found on http://en.wikipedia.org/wiki/Kausia

kausia

Macedonian felt hat with broad brim
Found on http://phrontistery.info/k.html

Kausia

Macedonian hat.
Found on http://s_van_dorst.tripod.com/Ancient_Warfare/Greece/greek_glossary.html
No exact match found