Elastic Thread, White, 30yd Dritz Elastic Thread is a very thin elastic sewing thread used to create gathering, shirring and smocking on lightweight fabrics. Use the thread in the bobbin of the machine and sew multiple rows to achieve the desired effect. Very thin elastic sewing thread To create gathering, shirring and smocking on lightweight fabrics Machine washable and dryable in temperatures up to 200 F Quantity:1 PC Length:30 YD (27.4 m) Color:White Hand wind on bobbin and stitch on right side of fabric. Care: Machine wash and dry in temperatures up to 200 degree F.