The Songkok
It is called “songkok” in the Ethnic Malay cultural sphere in the Malay peninsula, Sumatra, and coastal Borneo. However in Java it is called “kopiah” or “kopeah”. In Indonesia it also known nationwide as “peci”. The name “peci” was probably derived from the Dutch word petje means “small hat”. Whatever the name they are all the same shape and style. (read more here)