After the crocodile can no longer be found on Nias, the material is replaced with hammered metal.
The older ones that were made from crocodile skin are called öroba uli mbuaya.
Another pair of crocodile skin were used to cover the vest, starting from the side of the body, armpits, and backside of the neck.
Through a certain process, the crocodile's skin becomes so hard and stiff that it is considered impenetrable by enemy weapons, except for the front, starting from the neck to the lower abdomen, which is not buttoned and protected.
It is said that zinc or an iron plate is obtained by bartering with merchants called orang seberang (lit.