Thread savers come in a set of 20 pieces such that you can keep all the spools in a set arranged. The best part is they do not entirely cover the thread, thus letting you see the color, and are durable enough to last for years. Do not worry pets getting tangled up and putting the whole thing to the floor. Features -Color:Assorted Color -Material: Silicone. -Size: 2.00X1.00X3.00cm/0.79X0.39X1.18inch. - Conjunction with your bobbin holders to keep your thread organized while doing your machine embroidery pairs as the for your thread. - This will keep your thread from going all crazy and is easily removable for easy access to string when you need it. - These silicone keepers are great and wraps perfectly and tightly around your spools. - Sewing clips can hold multiple layers of fabric for stitching and binding. - Spool huggers made of silicone are flexible, durable and reusable for a lifetime, keeping thread organized and neat. Package list: thread spool huggers