This very thin elastic sewing thread used to create gathering shirring and smocking on lightweight fabrics in all kinds of garments and home decor as well as extra support for knit and crocheted ribbing for socks, sweaters and much more. Made of 28 percent polyester and 72 percent rubber. Machine washable/dryable in temperatures up to 200 degrees fahrenheit. Hand wind on bobbin and stitch on right side of fabric. Available in black color. Measures 30-yard length.