Safavid silk jacket. Silk jacket, Safavid Period, 16th century A.D.,Persia Kept in The Armoury (Oruzheynaya Palata), Russia. A caftan (from Persian خفتان xaftân) is a front-buttoned coat or overdress, usually reaching to the ankles, with long sleeves. It can be made of wool, cashmere, silk, or cotton. It may be worn with a sash. It is also commonly known as Khalat in Iran.