The Safavid turban had a unique feature signifying their adherence to the Shia ideology.
It was wrapped around a red felt cap, with 12 folds signifying the 12 imams of Twelver Shi‘ism. The design includes a tall, pointed finial at the top.
Here is an example: Shah Tahmasp I in the mountains (detail), by Farrukh Beg at the Museum of Asian Art , Washington, formerly Freer Gallery.