The answer is: Camel's hair

Matt 3:4 - A rough and coarse garment like the prophets used to wear. c.f. Zec 13:4; 2 Ki 1:8

John the Baptist certainly made a statement with his unique sense of style! Clad in camel's hair and a leather belt, he stood apart from those around him, embodying the prophetic tradition. Camel's hair was not merely an odd fashion choice; it linked John to ancient prophets like Elijah, who also dressed in rough materials to symbolize a life of austerity and dedication to God. Interesting trivia – the way of living in such humble clothing emphasized detachment from worldly pleasures and a complete focus on spiritual matters.

Additionally, in Zechariah 13:4, the connection between these rough garments and the false prophets is fascinating. Zechariah mentions that prophets who deceive Israelites will be ashamed of their coarse clothes. In contrast, John embraced his humble outward appearance, preaching urgency for repentance and heralding the way for change.

Don’t forget how nature was his embrace! He survived mainly on locusts and wild honey, highlighting not only his devotion but also the theme of reliance on nature for God’s provision. His lifestyle might seem extreme to modern folk, but it conveys a powerful message of commitment and readiness for the coming changes he spoke about.

Plus, talking about Elijah, it’s worth mentioning that the Jewish tradition holds that Elijah will return before the end time, linking John back into that narrative in a remarkable way. All these elements create a rich tapestry surrounding John the Baptist, making his story both compelling and deeply significant in the context of biblical artistry!