Caftan, also spelled Kaftan, is man's full-length garment of ancient Mesopotamian origin, worn throughout the Middle East. Most of them are made out of cotton or Silk fabric or a combination of both. it's long, has wide sleeves, and is open within the front, although frequently it's bound with a sash. The Topkapi Palace in Istanbul has an out-of-this-world collection of such kaftans sewn in rich, luxurious fabrics.