Cosmo floss is a six-strand cotton embroidery floss made by the Japanese company Lecien. It is available in a wide range of colors, including solids, variegated, and metallic threads. Cosmo floss is known for its soft, silky texture and its vibrant colors. It is a popular choice for embroidery projects, such as cross stitch, needlepoint, and counted thread work.

Red Rock Threads carries the following lines of Cosmo Floss: