DMC Light Effects Thread is a glistening metallic thread that will add reflective qualities and sparkle to any needlework or craft project. Made from 100% polyester fibers, Light Effects Floss is comprised of 6 size 25 easily separated strands. Light Effects uses a colour numbering system that easily corresponds to the popular cotton DMC Embroidery Floss. You can add a subtle highlight to your stitching by combining one strand of cotton Floss with one strand of Light Effects. Or for a more vibrant look, you can substitute Light Effects for its matching shade in Cotton Floss.