The Fulani hat is a conical fiber hat with leather applications that comes from the Fulani people in West Africa.
It is typically worn by the Wodaabe, a nomadic cattle-herder subgroup of the Fulani.
At the very top of the hat there is a knob which is covered in leather.
At the base of the hat there is often a chinstrap with a tassel at the end.
[1] The hats were featured on dancers in the 2018 music video All the Stars by the artist Kendrick Lamar.