These exciting new multicolor Sulky threads are a masterful blend of different colors within the same range of tone and intensity, with random, subtle color changes every 2-1/2 to 5 inches! No thread has ever done that before. They will add excitement to your quilting and everything else you do. They're made of the highest quality, long-staple, 100% Egyptian Cotton. Not only are they ideal for quilting, but also for thread lace, bobbin work, thread painting, red work and decorative embroidery. You'll wonder how you ever got along without them. They're made of the highest quality, long-staple, 100% Egyptian Cotton. The 30 weight spools are a lighter thread and contain 500 yards per spool.