When you are looking for silk thread, chances are good you are looking for YLI. YLI has been selling silk thread longer than anyone. YLI silk threads are the choice of some of the most accomplished designers throughout the world, and YLI thread and colors are specified in many books and instructions. YLI offer more variety, in more colors, than anyone in the business. All silk threads are 100% pure filament silk, the very highest quality silk thread in the world. YLI is the silk thread you are asking for.