Now John wore a garment of camel’s hair and a leather belt around his waist, and his food was locusts and wild honey. (Matthew 3:4 ESV)
Emmerson comments on the type of garment worn by John:
Hair from the back and hump of the camel was woven into a harsh material, and a softer cloth was produced from the finer hair taken from underneath the animal. The natural variations in the color of the hair could be woven into a pattern. (The International Standard Bible Encyclopedia Revised, 1:584).
John did not wear the soft clothing typical of those who dwell in royal palaces.
What then did you go out to see? A man dressed in soft clothing? Behold, those who are dressed in splendid clothing and live in luxury are in kings’ courts. (Luke 7:25 ESV)
Bible students immediately remember similarities between John and the prophet Elijah (2 Kings 1:8; cf. Luke 1:7).