Using hand-spun tzitzit threads for your Tallit Gadol (Prayer Shawl) has a special merit. Here is a package of 16 top quality 100% wool tzitzit threads, each one hand-prepared by G-d fearing Torah scholars. The package carries the certifying seal of the Eidah Chareidit in Jerusalem. Attaching the tzitzit threads to your Tallit is a skilled task demanding knowledge of the relevant laws. If you are not doing it yourself, it is important to ensure that only someone familiar with the specific laws does this. Washing instructions: Wash at 30C (86F). straighten out the strings while still wet. Hang to dry. Not for the drier. Recommended: use Magen Tzitzit