Kekereb is a Sacred Clothing that is used as a head covering when you are in the ritual of Astral Projection. The Balinese believe that the cloth will help you to concentrate as you enter the other dimension. It will also help you change your form as you get out of your body. This experience is called "ngelekas". It is usually made from a piece of cloth written by an artist with spiritual knowledge. Nowadays people still use it as a sacred item or just decoration, but still for protection against evil spirits.