Yajnyopavita or poonal kayiru is a sacred thread which Brahmin men wear it across their body. They start wearing it from their young age after performing certain rituals. This thread is made from pure cotton so it is harmless to the skin. Brahmins wearing the poonal thread daily do poojas by chanting mantras. Some rules are followed when you wear the poonal thread to show respect to it. This set contains 4 pieces of sacred thread in it.