>> The kris is famous for its distinctive wavy blade

The kris (kêrìs) is an asymmetrical dagger with distinctive blade-patterning achieved through alternating laminations of iron and nickelous iron (pamor). While most strongly associated with the culture of Indonesia the kris is also indigenous to Malaysia, Thailand, Brunei, Singapore and the southern Philippines where it is known as kalis with variants existing as a sword rather than a dagger. The kris is famous for its distinctive wavy blade, although many have straight blades as well.

Kris have been produced in many regions of Indonesia for centuries, but nowhere—although the island of Bali comes close—is the kris so embedded in a mutually-connected whole of ritual prescriptions and acts, ceremonies, mythical backgrounds and epic poetry as in Central Java. As a result, in Indonesia the kris is commonly associated with Javanese culture, although other ethnicities are familiar with the weapon as part of their culture, such as the Balinese, Sundanese, Madurese, Banjar, Thais, and Filipinos. It is also highly associated with and a part of Malay and Moro (Muslim Filipino) culture.

The kris consists of three parts; blade (wilah), hilt (hulu) and sheath (warangka)

A kris can be divided into three parts: blade (bilah or wilah), hilt (hulu), and sheath (warangka). These parts of the kris are objects of art, often carved in meticulous detail and made from various materials: metal, precious or rare types of wood, or gold or ivory. A kris's aesthetic value covers the dhapur (the form and design of the blade, with around 60 variants), the pamor (the pattern of metal alloy decoration on the blade, with around 250 variants), and tangguh referring to the age and origin of a kris. Depending on the quality and historical value of the kris, it can fetch thousands of dollars or more.

Both a weapon and spiritual object, kris are often considered to have an essence or presence, considered to possess magical powers, with some blades possessing good luck and others possessing bad. Kris are used for display, as talismans with magical powers, weapons, a sanctified heirloom (pusaka), auxiliary equipment for court soldiers, an accessory for ceremonial dress, an indicator of social status, a symbol of heroism, etc. Legendary kris that possess supernatural power and extraordinary ability were mentioned in traditional folktales, such as those of Empu Gandring, Taming Sari, and Setan Kober.

In 2005, UNESCO gave the title Masterpiece of the Oral and Intangible Heritage of Humanity to the kris of Indonesia. In return, UNESCO urged Indonesia to preserve their heritage.
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