The songkok or peci or kopiah is a cap widely worn in Indonesia, Brunei, Malaysia, Singapore, the southern Philippines and southern Thailand, most commonly among Muslim males. It has the shape of a truncated cone, usually made of black or embroidered felt, cotton or velvet. It is also worn by males in formal occasions such as weddings and funerals or festive occasions such as the Eid ul-Fitr and Eid al-Adha holidays.