This ribbon is woven from 100% rayon, and finished with a fancy little edging (see photos for detail). They dye perfectly with our Fiber Reactive Procion type dyes. Get just the right color hue and shade. Looking for a vintage color shade impossible to find in retail fabric stores? Dye your own ribbon! It's super easy! Available in five widths and perfect for any ribbon embellishment - enthusiastic embroidery, glamorous garment trim, crazy quilting, specialty costuming, or millinery mania! Want Rayon Ribbon without the fancy edge weave? We've got that too! (#RR) Please note that, in this case, "mm" stands for millimeter and not momme weight. 7mm ~ 1/4 inch (.27") 25 meter spool = 27.34yds 13mm ~ 1/2 inch (.51") 25 meter spool = 27.34yds 25mm ~ 1 inch (.98") 10 meter spool = 10.94yds 38mm ~ 1 1/2 inch (1.496") 10 meter spool = 10.94yds 50mm ~ 2 inches (1.968") 10 meter spool = 10.94yds *Key 25mm = approx. 1 inch 1 meter = approx. 1yd or 3ft