Don't know what a Tfillin is? Well, this video will explain everything you need to know about the Tefillin, otherwise known as phylacteries. It will explain what it is and why it's needed, along with how to wear it for tractional Judaism.
A tefillin is a set of small, black, cubic leather boxes, containing scrolls of parchment inscribed with verses from the Torah. Its leather straps are dyed black on one side and worn by observant Jewish men during weekday morning prayers.