This jacket is made of a striped handwoven textile. It is lined with plain cotton and the front panels are decorated with couching, embroidery, and shell beadwork. Couching involves tying down accessory elements such as ordinary or metallic thread, sequins, coloured yarn, or other bits of ornament to the surface of the cloth with a series of short stitches. Shiny materials, such as the pieces of mica and shell on this jacket, are caught in a pattern of embroidery on the surface of the fabric giving it a dazzling appearance. The technique of couching is highly developed on the island of Sumatra, with the best fabrics coming from Lampung in the south of the island. They are also highly sought after in peninsular Malaysia. The use of gold, silk and metallic threads, indicating a higher status and rank, spread throughout the courts of Sumatra and Kalimantan. It was introduced from China in the eighteenth and nineteenth centuries when the wealthy Chinese living in Indonesia imported a large number of costumes for themselves. Marriages between rulers and women from China developed yet further the influence of Chinese court costume in Indonesian textiles.