Wool is fine. They don’t make Talit from linen Last Updated: 7 years ago in Tzitzit/Tefilin Tags: cotton, strings, Wool Related Articles Hi my minhag is not to wear tefilin during minha of a fast- do I need to if im praying with rov wearing tefilin? Rabbi is this teffilin kosher Does one make another bracha if he changed his tzitzis in middle of the day i.e. Erev shabbos? Do sefaradim Put on tefilin on chol hamoed? Should I be wearing teckelet How many blue strings should I use and how should it be tied?