They call them "babas", a word very common in India that can mean friend, father, grandfather or uncle. A Sadhu (good man), chooses to leave everything behind, following the "Sannyasa" (renunciation). He chooses to live a life apart from the edges of society to focus on his own spiritual practice. A very tiny and simple life. A life so small that can fit in a bag, as I heard from someone of them.