The term comes from El Frustat, suburb of Cairo, where this fabric originated. It is a cotton fabric with satin or diagonal armor, compact, very robust, made of very resistant yarns, garbled and hairy on the straight and rough on the reverse. It has a particular look that recalls suede leather. There are many varieties of different type and weight, smooth, more or less velvety. The variants are also called with English names such as beaverteen, doeskin, moleskin.