DMC Satin Floss S310 Black Embroidery Thread 100% rayon fibers, Comprised of 6 size 25 easily separated strands. DMC Satin Floss is a shiny radiant thread made from 100% rayon fibers that brings exceptional beauty and sheen to all stitching projects. Satin Floss is the shiniest DMC thread available and it glides easily through fabric. Satin Floss is comprised of 6 size 25 easily separated strands, allowing you to adjust the thickness of your stitching by using a different number of strands. The bright fibers of Satin Floss make this thread ideal for creating surface embroidery stitches which reflect light beautifully. Bring radiance to your designs with the satin range of bright and dynamic colors; or bring a soft touch by using the pastel tones available. For more astonishing effects you can mix DMC Satin Floss with other DMC threads such as Light Effects, Color Variations or even Cotton Floss and Pearl Cotton. Satin Floss is 100% colorfast and fade resistant. Satin Floss comes in a single long label to protect the thread while still allowing exposure at each end so you can feel its silky softness. DMC Satin Floss features the familiar 8m (8.7 yard) pull skein put-up.