One of the most interesting traditional dresses is the Mazandarani dress. The Mazandaran region lies to the north of Iran, in the area of the Caspian Sea, north of Tehran.
The region is filled with farmlands and engages in agriculture. The Costume of Mazandaran consists of trousers and dress, like most regional dress. For men, generally a cotton shirt that is simple can be worn with trousers that are similar to hunting trousers.
Shoes, socks or boots are often worn high below the knee. Nomadic hats, made from sheep’s hair or the like is also very common among the Mazandarani village fashions.
Reference:
http://english.tebyan.net/newindex.aspx?pid=181436