This thread is not just a filament that is braided- it is made with the metallic part tightly wrapped around a rayon core, giving its stitched appearance the richness of real metal thread. Great fiber to use for outlining and bends rather well around curved shapes. All sizes are excellent for couching. 65% Rayon, 35% Metalized Polyester. Hand Washable. Made in England and Japan. #4 is comparable to La Lame Smooth 1-1/4 and Christopher 2B. Used for cross stitch on 11-18 count. 10 yard cards.