Coats Seta Reale 100% pure Silk sewing thread. Seta Thread is a luxurious sewing thread made of pure silk for an extra special sewing experience. Coats silk thread is made from long continuous filament fibres resulting in stronger and more lustrous thread that can stretch easily. This product performs well with both hand and machine stitching and is ideal for silk, satin and other precious and lustrous fabrics. Available in 59 shades. Ticket 100 extra fine for thin, delicate woven fabrics and garments like wedding and night dresses.