Janeu, also called the sacred tread, has three threads, each one of which, in turn, is made up of eight cotton yarns. The three threads are tied together at one place with seven granthis (knots).
Janeu or Yagnopaveeth or sacred thread is worn in india since a very long time... It has a big religious importance in Hinduism.
The strands of the thread stand for purity of thoughts, words and deeds of the wearer... Yagnopaveeths are totally handmade ...Their is no use of machines in it..